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<item>
    <title>一个经典单管超再生FM收音机，制作上有决窍！</title>
    <link>https://5bcl.com/Circuit_maintenance/4724.html</link>
    <description><![CDATA[<!--?xml encoding="utf-8" ?-->
<section>这是一个国外很流行的单管FM收音机方案：仅仅依靠单个场效应管，和少量外围元件，搭建超再生接收电路，就能组装出一台性能不错的调频收音机&mdash;&mdash;也就是海外爱好者口中常说的single transistor FM radio<span style="background-color: transparent; letter-spacing: 0.034em; visibility: visible;">。</span></section>
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<section><strong>一、认识这台单管FM接收机主要元件</strong></section>
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<section style="display: inline-block; visibility: visible;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/8f9ca517c0ddf2454059b7fad2357621.jpg"></section>
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<section>照片里这台自制设备，是海外无线电圈流传甚广的经典实验机型。我们先来识别照片中的几个主要元件：</section>
<section></section>
<section>供电：9V杜拉塞尔方块电池，为整个有源电路提供能源。</section>
<section>调谐元件：小型可变电容，用来改变LC谐振频率。</section>
<section>谐振线圈：空心铜线圈，作为LC回路电感，谐振在调频广播频段。</section>
<section>扼流圈：红色磁芯小线圈，阻隔高频射频信号、允许低频音频通过。</section>
<section>核心器件：N沟道结型场效应管(JFET)</section>
<section>输出端：鳄鱼夹外接小型高阻抗扬声器。</section>
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<section>虽然需要电源，但它的元件精简程度几乎做到了极致&mdash;&mdash;这台机器仅依靠一枚场效应管，同时完成淬灭振荡、FM信号解调、射频放大三重工作，这就是单管超再生电路最神奇的地方。</section>
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<section><strong>二、核心原理：为什么超再生接收电路可以解调FM信号？</strong></section>
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<section>想要理解这台机器，首先分清两个极易混淆的概念：再生电路与超再生电路。</section>
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<section>普通再生式收音机，依靠正反馈提升灵敏度，控制在临界振荡以下。而超再生接收机增加了一层&ldquo;淬灭振荡&rdquo;。电路会产生一组低频间歇信号，周期性开启、关闭射频振荡。</section>
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<section>简单通俗的比喻：场管就像一个高速开关，在LC回路中不断反复开启与关闭振荡。当空中传来FM调频广播信号时，LC谐振回路对不同频率的FM信号，起振/停振的阈值、起振幅度不一样，淬灭周期内的平均电流发生变化，从而取出音频信号并加以放大，驱动喇叭。</section>
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<section>对于FM调频信号而言，超再生解调和常见的FM矿石机&ldquo;二极管斜率检波&rdquo;底层思路是完全不同的&mdash;&mdash;FM矿石机依靠LC谐振曲线的斜坡完成解调；超再生电路利用振荡阈值变化实现解调。也正因为如此，超再生FM收音机的灵敏度和音质，要高于斜率鉴频的简易FM收音机。</section>
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<section><span style="background-color: transparent; letter-spacing: 0.034em;">超再生电路天生存在一个标志性特征：没有电台的时候，扬声器持续发出巨大的沙沙噪声。这是电路自由振荡产生的固有底噪，叫做淬灭噪声，是超再生标志。很多新手初次调试，误以为噪声代表电路故障，恰恰相反，稳定的噪声，往往代表超再生电路已经正常起振。一旦对准电台频率，噪声被信号抑制，人声与音乐随之浮现。</span></section>
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<section><strong>三、元器件选择与搭建电路关键诀窍</strong></section>
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<section>电路图局部如下，完整电路图在留言区。</section>
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<section style="display: inline-block;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/6401421e27a15b1dbc455a289605f347.jpg"></section>
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<section>这套经典电路已经有很多爱好者成功复刻，有着成熟的元件选用标准，具体参数见电路图上标注。</section>
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<section>需要强调指出的是，该电路所用场效应管必须是N沟道结型场效应管(JFET) 。首选MPF102，也可用2N3819、2N5458。不能使用增强型MOS管，无法正常工作。</section>
<section></section>
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<section>电路搭建的诀窍：直接在覆铜板上搭焊元件！利用铜板作为高频接地平面，最大限度降低调频频段的杂散干扰。</section>
<section></section>
<section>FM属于超高频，导线过长、走线杂乱带来的分布电容，足以让电路彻底失效。原版方案采用覆铜板大面积接地，所有元件引脚尽量剪短，线圈、可变电容紧贴电路板，这也是复刻成功的关键秘诀。很多爱好者按照图纸焊接，却收不到任何电台，绝大多数问题都出在过长的引线上。</section>
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<section><strong>四、灵敏度虽高，但有着无法回避的先天缺陷</strong></section>
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<section>第一，选择性差。因为缺少中频滤波结构，邻近频率的电台容易互相串扰。</section>
<section>第二，底噪较大。即便收到清晰电台，背景依旧伴随沙沙噪声，音质比不上超外差收音机。</section>
<section>第三，接收稳定性不足。外界温度变化、人手靠近线圈，分布电容轻微改变，频率就容易漂移<span style="background-color: transparent; letter-spacing: 0.034em;">。</span></section>
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<section>正因如此，超再生FM电路虽然灵敏度很高，却没有成为商品FM收音机主流方案。过去曾短暂应用在简易FM收音机上，但很快便被超外差架构代替。如今超再生FM电路更多作为怀旧实验电路，留存于无线电DIY圈子之中。</section>]]></description>
    <pubDate>Mon, 10 Aug 2026 07:44:00 +0800</pubDate>
    <dc:creator>广播发烧网</dc:creator>
    <guid>https://5bcl.com/Circuit_maintenance/4724.html</guid>
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<item>
    <title>68元，野生程序员 DIY 桌面收音机，FM广播、 天气预报、 老黄历、温湿度显示、迷你时钟</title>
    <link>https://5bcl.com/Circuit_maintenance/4725.html</link>
    <description><![CDATA[<!--?xml encoding="utf-8" ?-->
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<section style="margin-top: 0px; margin-bottom: 0px; visibility: visible;" data-pm-slice="2 4 [&quot;para&quot;,{&quot;tagName&quot;:&quot;section&quot;,&quot;attributes&quot;:{&quot;powered-by&quot;:&quot;xiumi.us&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;},&quot;para&quot;,{&quot;tagName&quot;:&quot;section&quot;,&quot;attributes&quot;:{},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;},&quot;para&quot;,{&quot;tagName&quot;:&quot;section&quot;,&quot;attributes&quot;:{},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;},&quot;para&quot;,{&quot;tagName&quot;:&quot;section&quot;,&quot;attributes&quot;:{&quot;data-role&quot;:&quot;paragraph&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;},&quot;para&quot;,{&quot;tagName&quot;:&quot;section&quot;,&quot;attributes&quot;:{},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;},&quot;para&quot;,{&quot;tagName&quot;:&quot;section&quot;,&quot;attributes&quot;:{&quot;data-role&quot;:&quot;outer&quot;,&quot;label&quot;:&quot;edit by 135editor&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;},&quot;para&quot;,{&quot;tagName&quot;:&quot;section&quot;,&quot;attributes&quot;:{&quot;data-tools&quot;:&quot;135编辑器&quot;,&quot;data-id&quot;:&quot;105278&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;}]">
<section style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; color: rgba(0, 0, 0, 0.9); font-family: 'PingFang SC NEW', system-ui, -apple-system, 'system-ui', 'Helvetica Neue', 'Hiragino Sans GB', 'Microsoft YaHei UI', 'Microsoft YaHei', Arial, sans-serif; font-size: 17px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.544px; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; visibility: visible;">
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<section style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; color: rgba(0, 0, 0, 0.9); font-family: 'PingFang SC NEW', system-ui, -apple-system, 'system-ui', 'Helvetica Neue', 'Hiragino Sans GB', 'Microsoft YaHei UI', 'Microsoft YaHei', Arial, sans-serif; font-size: 17px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.544px; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; visibility: visible;" data-pm-slice="2 4 [&quot;para&quot;,{&quot;tagName&quot;:&quot;section&quot;,&quot;attributes&quot;:{&quot;powered-by&quot;:&quot;xiumi.us&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;},&quot;para&quot;,{&quot;tagName&quot;:&quot;section&quot;,&quot;attributes&quot;:{},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;},&quot;para&quot;,{&quot;tagName&quot;:&quot;section&quot;,&quot;attributes&quot;:{},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;},&quot;para&quot;,{&quot;tagName&quot;:&quot;section&quot;,&quot;attributes&quot;:{&quot;data-role&quot;:&quot;paragraph&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;},&quot;para&quot;,{&quot;tagName&quot;:&quot;section&quot;,&quot;attributes&quot;:{},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;},&quot;para&quot;,{&quot;tagName&quot;:&quot;section&quot;,&quot;attributes&quot;:{&quot;data-role&quot;:&quot;outer&quot;,&quot;label&quot;:&quot;edit by 135editor&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;},&quot;para&quot;,{&quot;tagName&quot;:&quot;section&quot;,&quot;attributes&quot;:{&quot;data-tools&quot;:&quot;135编辑器&quot;,&quot;data-id&quot;:&quot;105278&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;}]">
<section style="text-align: center; visibility: visible;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/daeb24ba53111b6b2adab549da29188d.png"></section>
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<blockquote>
<p><span style="font-size: 14px; font-weight: bold; visibility: visible;">文末获取项目</span><span style="font-size: 14px; color: #0052ff; font-weight: bold; visibility: visible;">完整源码</span></p>
</blockquote>
<span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="font-size: 15px; font-weight: normal; visibility: visible;">野生程序员在闲暇之余手搓了一台</span><span style="font-size: 15px; font-weight: bold; visibility: visible;">桌面FM收音机</span><span style="font-size: 15px; font-weight: normal; visibility: visible;">，使用乐鑫ESP32-S3做为主控，FM芯片使用RDA5807，集成CS4344 I2S音频芯片可以播放音频、集成INA199可以采集整机工作电流，</span><span style="font-size: 15px; font-weight: normal; visibility: visible;">拥有8个功能：网络时钟、FM广播、天气预报、B站数据统计、老黄历、背光调节、定时关机、温湿度显示，你可以手拨右侧旋转编码器进行交互。</span><br></span></span></section>
<section style="text-align: center; visibility: visible;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/b3966b8d50950c26a2c6ed84d4164363.png"></section>
<p style="margin-top: 0px; margin-bottom: 0px;"><strong><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="font-size: 15px; font-weight: bold;">FM收音机模块</span></span></strong></p>
<p style="margin-top: 0px; margin-bottom: 0px;"><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="font-size: 15px; font-weight: bold;">桌面FM收音机</span><span style="font-size: 15px; font-weight: normal;">采用的RDA5807收音机模块，RDA5807是一颗调频广播单芯片接收调谐芯片，</span></span><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;" data-pm-slice="1 1 [&quot;para&quot;,{&quot;tagName&quot;:&quot;section&quot;,&quot;attributes&quot;:{&quot;powered-by&quot;:&quot;xiumi.us&quot;,&quot;data-nest-level&quot;:&quot;2&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;},&quot;para&quot;,{&quot;tagName&quot;:&quot;section&quot;,&quot;attributes&quot;:{&quot;data-tools&quot;:&quot;135编辑器&quot;,&quot;data-id&quot;:&quot;105278&quot;,&quot;data-nest-level&quot;:&quot;3&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;},&quot;para&quot;,{&quot;tagName&quot;:&quot;p&quot;,&quot;attributes&quot;:{&quot;style&quot;:&quot;margin-top: 0px; margin-bottom: 0px;&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;}]"><span style="font-size: 15px; font-weight: normal;">工作电压范围2.7~3.3V。</span></span><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="font-size: 15px; font-weight: normal;">只需要外部非常少的元器件，便可以组成一个完整的调频广播接收机。</span></span></p>
<section style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, 'PingFang SC', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', 'Hiragino Sans GB', 'Microsoft YaHei UI', 'Microsoft YaHei', Arial, sans-serif; line-height: 1.6; letter-spacing: 0.034em; font-style: normal; font-weight: normal; box-sizing: border-box !important; overflow-wrap: break-word !important;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/d03dcbdad85b68263d99a3be7e8d7b1e.jpg"></section>
<p style="margin-top: 0px; margin-bottom: 0px;"><strong><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="font-size: 15px; font-weight: bold;">时间校准</span></span></strong><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;"><br></span></p>
<p style="margin-top: 0px; margin-bottom: 0px;"><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="font-size: 15px; font-weight: normal;">时钟校时部分采用了一个通用的时间同步服务，选择连接时间服务器IP :cn.pool.ntp.org,再通过代码获取时间。</span></span></p>
<p style="margin-top: 0px; margin-bottom: 0px;"><strong><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;" data-pm-slice="1 1 [&quot;para&quot;,{&quot;tagName&quot;:&quot;section&quot;,&quot;attributes&quot;:{&quot;powered-by&quot;:&quot;xiumi.us&quot;,&quot;data-nest-level&quot;:&quot;2&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;},&quot;para&quot;,{&quot;tagName&quot;:&quot;section&quot;,&quot;attributes&quot;:{&quot;data-tools&quot;:&quot;135编辑器&quot;,&quot;data-id&quot;:&quot;105278&quot;,&quot;data-nest-level&quot;:&quot;3&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;},&quot;para&quot;,{&quot;tagName&quot;:&quot;p&quot;,&quot;attributes&quot;:{&quot;style&quot;:&quot;margin-top: 0px; margin-bottom: 0px;&quot;,&quot;data-pm-slice&quot;:&quot;0 0 []&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;},&quot;node&quot;,{&quot;tagName&quot;:&quot;strong&quot;,&quot;attributes&quot;:{&quot;style&quot;:null},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;}]">&nbsp;</span></strong></p>
<p style="margin-top: 0px; margin-bottom: 0px;"><strong><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;" data-pm-slice="1 1 [&quot;para&quot;,{&quot;tagName&quot;:&quot;section&quot;,&quot;attributes&quot;:{&quot;powered-by&quot;:&quot;xiumi.us&quot;,&quot;data-nest-level&quot;:&quot;2&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;},&quot;para&quot;,{&quot;tagName&quot;:&quot;section&quot;,&quot;attributes&quot;:{&quot;data-tools&quot;:&quot;135编辑器&quot;,&quot;data-id&quot;:&quot;105278&quot;,&quot;data-nest-level&quot;:&quot;3&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;},&quot;para&quot;,{&quot;tagName&quot;:&quot;p&quot;,&quot;attributes&quot;:{&quot;style&quot;:&quot;margin-top: 0px; margin-bottom: 0px;&quot;,&quot;data-pm-slice&quot;:&quot;0 0 []&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;},&quot;node&quot;,{&quot;tagName&quot;:&quot;strong&quot;,&quot;attributes&quot;:{&quot;style&quot;:null},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;}]"><span style="font-size: 15px; font-weight: bold;">软件开发</span></span></strong></p>
<section style="margin-top: 0px; margin-bottom: 0px;"><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="font-size: 15px; font-weight: normal;">在arduino中采用RDA5807收音机模块库&lt;RDA5807.h&gt;来完成FM收音部分，首先也是最容易忽视的一步，通过原理图可知：FM和ESP32板输入的选择由RS2101XC6的模拟开关决定，IN输入信号为low则输出的是No引脚上的信号；IN输入信</span></span><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;" data-pm-slice="1 1 [&quot;para&quot;,{&quot;tagName&quot;:&quot;p&quot;,&quot;attributes&quot;:{&quot;style&quot;:&quot;margin-bottom: 0px;&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;}]"><span style="font-size: 15px; font-weight: normal;">号为High,则输出是NC引脚上的信号。因此若要使用FM模块，则需将1号对应AUDIO_SEL的电平调高。其次，也是观察电路图，和音频放大器的技术规格说明，只有当1号对应引脚SHUTDOWN为高电平时才能将输入的音频信号处理输出给扬声器输出。</span></span></section>
<p style="margin-top: 0px; margin-bottom: 0px;"><strong><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;"><br></span><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="font-size: 15px; font-weight: bold;">右侧旋转编码器</span></span></span></strong><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;"><br></span></p>
<p style="margin-top: 0px; margin-bottom: 0px;"><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="font-size: 15px; font-weight: normal;">FM收音机部分，设置&ldquo;切换模式&rdquo;，&ldquo;提高音量&rdquo;，&ldquo;降低音量&rdquo;，&ldquo;换台&rdquo;四个功能。</span></span></p>
<p style="margin-top: 0px; margin-bottom: 0px;"><strong><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;">&nbsp;</span></strong></p>
<p style="margin-top: 0px; margin-bottom: 0px;"><strong><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="font-size: 15px; font-weight: bold;">屏幕显示部分</span></span></strong><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;"><br></span></p>
<p style="margin-top: 0px; margin-bottom: 0px;"><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="font-size: 15px; font-weight: normal;">采用的是典型的OLED驱动&lt;Adafruit_SSD1306.h&gt;，将其用于与收音机的信息显示。</span></span></p>
<section style="text-align: center; margin-top: 8px;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/4da8a815f8bca9c76eb9d612524de9de.png"></section>
<section style="margin-top: 16px; margin-bottom: 0px;"><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;" data-pm-slice="1 1 [&quot;para&quot;,{&quot;tagName&quot;:&quot;p&quot;,&quot;attributes&quot;:{&quot;style&quot;:&quot;margin-bottom: 0px;&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;}]"><span style="font-size: 15px; font-weight: normal;">3D打印文件</span></span></section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/47d28565dd98ea7bb57a55674f9ebf94.png"></section>
<section style="margin-top: 0px; margin-bottom: 0px;"><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;" data-pm-slice="1 1 [&quot;para&quot;,{&quot;tagName&quot;:&quot;p&quot;,&quot;attributes&quot;:{&quot;style&quot;:&quot;margin-bottom: 0px;&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;}]">&nbsp;</span></section>
<section style="margin-top: 0px; margin-bottom: 0px;"><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;" data-pm-slice="1 1 [&quot;para&quot;,{&quot;tagName&quot;:&quot;p&quot;,&quot;attributes&quot;:{&quot;style&quot;:&quot;margin-bottom: 0px;&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;}]"><span style="font-size: 15px; font-weight: normal;">PCB板卡正反面</span></span></section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/9da90ee98a59498e84ba001737203e1d.png"></section>
<section style="margin-top: 0px; margin-bottom: 0px;"><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;" data-pm-slice="1 1 [&quot;para&quot;,{&quot;tagName&quot;:&quot;p&quot;,&quot;attributes&quot;:{&quot;style&quot;:&quot;margin-bottom: 0px;&quot;},&quot;namespaceURI&quot;:&quot;http://www.w3.org/1999/xhtml&quot;}]">&nbsp;</span></section>
<p style="margin-top: 16px; margin-bottom: 8px;"><span style="-webkit-tap-highlight-color: transparent; margin-right: 0px; margin-left: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; color: #121213; font-family: Optima-Regular, PingFangTC-light; font-size: 16px; letter-spacing: 0.544px; text-align: left; caret-color: #121213; background-color: #ffffff; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="font-size: 15px; font-weight: normal;">Gitee 项目：</span><span style="font-size: 14px; color: #0052ff; font-weight: bold;">gsm-fm/gsm-fm-software</span></span></p>
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</section>]]></description>
    <pubDate>Sat, 08 Aug 2026 20:08:00 +0800</pubDate>
    <dc:creator>广播发烧网</dc:creator>
    <guid>https://5bcl.com/Circuit_maintenance/4725.html</guid>
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    <title>分享三种室内短波接收天线，简单、实用、易制作！</title>
    <link>https://5bcl.com/accessories/4723.html</link>
    <description><![CDATA[<!--?xml encoding="utf-8" ?--><section>上一篇文章<a href="/accessories/4720.html" target="_blank" data-mce-href="/accessories/4720.html">短波广播接收常用的三种室外天线，让收音机如虎添翼</a>但对于居住在高层楼房的短波爱好者来说，室外架设长线、偶极天线往往受物业、场地限制无法实现。室内天线便成为收听远距离短波广播的最优妥协方案。今天给大家分享三种适合业余爱好者的室内短波天线，简单、实用、易制作！&nbsp;</section><section></section><section><strong>一、入门零门槛：室内简易长线天线&nbsp;</strong></section><section></section><section>工作原理&nbsp;：</section><section>室内长线天线属于单端电场接收天线，本质是收音机内置拉杆天线的延伸，不依赖谐振匹配，属于宽频接收结构，3~30MHz全短波波段都能覆盖，信号强度会明显优于机身自带拉杆天线。&nbsp;</section><section></section><section>制作与安装：</section><section>可用3~5米绝缘软铜线自制，一端固定在近窗高处，另一端配备鳄鱼夹或3.5mm插头，直接夹在收音机拉杆天线顶端，或插入外接天线接口即可。</section><section></section><section>还有一种接法，长线末端绕十圈左右，套在拉杆天线上，也很实用。</section><section style="text-align: center; visibility: visible;" data-mce-style="text-align: center; visibility: visible;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/8caf781655d2dcb4385a2cfc62ee368c.jpg" data-mce-style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" data-mce-src="/content/uploadfile/weixin/202608/8caf781655d2dcb4385a2cfc62ee368c.jpg"></section><section></section><section></section><section>安装位置：</section><section>优先沿着窗边墙面拉直悬挂，远离LED灯、路由器等开关电源设备，导线距离墙体、金属窗框至少15厘米，不要盘绕成团堆放。盘绕后的导线会形成杂散电容电感，反而引入更多底噪。&nbsp;</section><section></section><section>优缺点总结&nbsp;：</section><section>优势：上手难度为零，即插即用；全短波宽频覆盖，不用调谐、不用匹配巴伦；体型纤细隐蔽，不会占用室内空间。</section><section></section><section>短板：抗干扰能力是三款天线里最弱的。城市楼房内的家电杂波、电网谐波均以电场干扰为主，长鞭天线拾取电场信号的同时，会一并收下噪音，高层强干扰环境下，常会出现“信号变强、噪音同步变大”的情况；增益提升也很有限，远距离电台改善效果一般。&nbsp;&nbsp;</section><section></section><section><strong>二、抗噪小能手：无源调谐小环天线&nbsp;</strong></section><section></section><section>无源小环天线是城区高干扰住户的首选。它与长线天线恰好相反，主打磁场接收，天然过滤电场杂波，也是玩家公认的“降噪神器”。&nbsp;</section><section style="text-align: center;" data-mce-style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/38d2dc4fe6941854b6b5659ec5e9bfb8.jpg" data-mce-style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" data-mce-src="/content/uploadfile/weixin/202608/38d2dc4fe6941854b6b5659ec5e9bfb8.jpg"></section><section></section><section>工作原理：&nbsp;</section><section>小环天线依靠LC谐振回路拾取电磁波里的磁场分量，对室内开关电源、电网产生的电场干扰具备较强的抑制能力。搭配可变电容组成谐振电路，转动电容旋钮调整谐振频率，精准对准目标短波电台，收台的选择性会大幅提升。</section><section></section><section>本文首发平台为公众号“杂七杂八小科普”，转发平台为头条号“杂七杂八小科普”，其余平台和账号均为搬运剽窃。</section><section></section><section>制作与安装：</section><section>自制LC调谐小环，周长控制在目标波长的1/10以内。实际中可选用空调铜管弯制直径40～60厘米圆环，管壁预留5mm绝缘缺口，缺口两侧引出引线搭配50~300pF空气可变电容。新手简易版本也可用1～2mm绝缘铜线绕制圆环，搭配小型调谐电容即可。<br>&nbsp;<br>小环LC谐振后阻抗极高（几千欧级别），想要阻抗匹配必须加装小型磁环巴伦(常用9：1），完成高阻抗环路与收音机50Ω输入阻抗的匹配，否则谐振效果大打折扣。</section><section style="text-align: center;" data-mce-style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/3400ee816bb066b24456aff4246a7975.jpg" data-mce-style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" data-mce-src="/content/uploadfile/weixin/202608/3400ee816bb066b24456aff4246a7975.jpg"></section><section></section><section>摆放要点：放置在靠窗桌面、置物架高处，远离金属柜体、钢筋窗框；调试时缓慢转动环体，一边旋转一边监听噪音变化，找到底噪最低的朝向固定位置。切记不要紧贴墙面摆放，墙体钢筋会屏蔽磁场，直接削弱接收灵敏度。&nbsp;</section><section></section><section>优缺点总结&nbsp;</section><section>优势：第一，抗干扰能力强，完美适配高层闹区、家电密集的家庭环境；第二，定向可调，通过旋转抵消定点干扰，减少串台现象；第三，体积小巧，桌面摆放不占地方。</section><section></section><section>短板：属于窄带谐振结构，切换电台需要手动转动电容调谐，无法做到宽频直收；环路增益偏低，微弱的DX远程电台收听效果不如大环天线；调试需要耐心，新手需要反复旋转旋钮找准谐振点。&nbsp;</section><section></section><section><strong>三、高灵敏度进阶款：矩形闭合大环天线&nbsp;</strong></section><section></section><section>矩形闭合大环是三款自制室内天线里接收灵敏度最高的款式，也是此次重点介绍的自制室内天线，在保证降噪能力的同时，大幅提升远程弱台拾取能力，适合动手能力较强、追求更高收听效果的玩家。</section><section style="text-align: center;" data-mce-style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/ffb15518f12fd561b12738586e4ca24f.jpg" data-mce-style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" data-mce-src="/content/uploadfile/weixin/202608/ffb15518f12fd561b12738586e4ca24f.jpg"></section><section></section><section>核心原理</section><section>天线采用一整根绝缘铜线弯折成矩形方框，铜芯首尾接在一起形成闭环，靠闭合环路切割磁力线感应电流。与小环天线一样，大环同样以磁场接收为主，因此具备抗电场干扰的特性，同时超大的环路面积弥补了小环增益不足的缺陷，是室内兼顾灵敏度与降噪的优秀方案。&nbsp;</section><section></section><section>特别强调：大环本质是平衡式天线振子，小环本质是LC谐振回路线圈，所以大环要完全闭合，小环要留出缺口串联电容。</section><section></section><section>制作与安装规范</section><section>1. 选材：选用1.5~2.5平方多股绝缘铜线，围成2米×2米左右的矩形方框，尺寸越大感应效果越好。</section><section>2. 闭合要求：接头处铜芯对接拧死，最好采用焊接方式，避免形成断路，抵消感应信号。</section><section>3. 馈电处理：在任一边中点位置剥开绝缘皮，引出300Ω扁馈线，接入4:1巴伦，再转为50Ω同轴电缆接入收音机。不可在拐角位置接线，保证环路平衡性。</section><section></section><section>临时简易实验，也可分别把两个接线头接机器天线与地线，但降噪和抗干扰效果会下降。</section><section></section><section>4. 架设：尽量贴靠窗户一侧，沿着窗帘上方悬空铺设，距离墙体、金属构件15厘米以上。&nbsp;</section><section></section><section><strong>优缺点总结&nbsp;</strong></section><section>优势：三款天线中灵敏度最高，大环闭路可以捕捉微弱信号，远距离电台收听提升最为明显；兼具磁场接收特性，底噪优于长线天线、小环天线。</section><section></section><section>短板：体积偏大，位置受限，空间不足难以搭建；必须搭配巴伦使用，匹配不当会破坏平衡特性，效果直接崩塌。&nbsp;&nbsp;</section><section></section><section>客观来说，室内天线永远无法达到室外架设天线的上限效果，但合理搭建、规范摆放，能在有限环境里最大化改善收听体验。</section><section></section><section></section><section>&nbsp;</section><section></section><section>&nbsp;</section><section></section>]]></description>
    <pubDate>Fri, 07 Aug 2026 06:30:00 +0800</pubDate>
    <dc:creator>广播发烧网</dc:creator>
    <guid>https://5bcl.com/accessories/4723.html</guid>
</item>
<item>
    <title>短波广播接收常用的三种室外天线，让收音机如虎添翼</title>
    <link>https://5bcl.com/accessories/4720.html</link>
    <description><![CDATA[<!--?xml encoding="utf-8" ?-->
<section>玩短波收音的老玩家都懂一句真理：三分看机器，七分靠天线。</section>
<section>&nbsp;</section>
<section>对于普通收音机爱好者来说，简单易制作、低成本、高性能的入门天线，才是性价比天花板。今天就给大家详细介绍三种简单易做的短波接收室外天线。（下次再介绍三种同样简单易制的室内短波天线，总有一种能适合你！）</section>
<section>&nbsp;</section>
<section><strong>一、长线天线：新手入门零门槛，最简单的短波天线</strong></section>
<section>&nbsp;</section>
<section style="text-align: center; visibility: visible;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/93f13310e9e95366c7b7b2b86349c62c.jpg"></section>
<section>长线天线，是所有短波天线的&ldquo;鼻祖&rdquo;，也是零基础玩家首选的入门款。它没有复杂结构、无需精准计算，仅仅依靠一根加长导线，就能远超原厂拉杆天线，适配3&ndash;30MHz全短波频段。</section>
<section>&nbsp;</section>
<section>天线参数</section>
<section>选用普通多股绝缘铜芯电线，最佳长度15&ndash;25米。18米为居家黄金长度，兼顾效果与安装便捷性。</section>
<section>&nbsp;</section>
<section>制作安装要点：</section>
<section>导线一端直接连接收音机外接天线接口(内芯)，另一端悬空拉直(水平&gt;斜拉&gt;垂直)，做好绝缘处理，避免接触墙体、金属构件。</section>
<section>&nbsp;</section>
<section>优缺点总结：</section>
<section>核心优势：成本几乎为零、制作零难度、全频段兼容，短波低频段（3&ndash;10MHz）接收效果尤为突出，能轻松捕捉远距离传播电台。</section>
<section>&nbsp;</section>
<section>不足之处：纯开放式接收结构，对环境干扰无过滤能力。在城市环境中，开关电源、LED灯、家电适配器产生的电磁噪音容易窜入信号。短波高频段（20MHz以上）接收效率相对一般。</section>
<section>&nbsp;</section>
<section>&nbsp;</section>
<section><strong>二、倒L天线：折中王者，兼顾效果与空间</strong></section>
<section>&nbsp;</section>
<section>倒L天线是长线天线的优化升级版。它改变了长线纯水平铺设的结构，采用垂直+水平90&deg;弯折结构，既保留了长线天线低频接收的优势，又大幅提升短波高频段灵敏度。</section>
<section>&nbsp;</section>
<section>天线参数：</section>
<section>整体总长控制在15&ndash;20米，黄金比例搭配：垂直段2&ndash;4米，水平斜拉段10&ndash;15米。</section>
<section>&nbsp;</section>
<section>制作安装要点：</section>
<section>靠近机器这一头做垂直段，往上立，到最高点之后，再水平或略倾斜向外拉出。其余同上。</section>
<section>&nbsp;</section>
<section>优缺点总结</section>
<section>核心优势：高低频段通吃、抗干扰优于普通长线、占用空间小。相比普通长线天线，远程弱台捕捉能力有所提升。</section>
<section>&nbsp;</section>
<section>不足之处：依然属于简易开放式天线，无抗干扰结构，极致嘈杂的城区环境中，仍会有明显底噪。</section>
<section>&nbsp;</section>
<section>特别注意！以上两种天线为不平衡天线。需要适配地线，依赖大地/地网作为虚拟另一半振子，才能发挥最佳性能。</section>
<section></section>
<section>本文首发平台为公众号&ldquo;杂七杂八小科普&rdquo;，转发平台为头条号&ldquo;杂七杂八小科普&rdquo;，其余平台和账号均为搬运剽窃。</section>
<section></section>
<section><strong>三、斜拉偶极天线：室外无源天线综合性能天花板</strong></section>
<section>&nbsp;</section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/e707f58e868774568b7b4a1a11727074.jpg"></section>
<section>如果说前两款是入门、进阶款，斜拉偶极天线就是简易短波天线的性能巅峰，也是户外架设的首选方案。</section>
<section>&nbsp;</section>
<section>&nbsp;</section>
<section>天线参数：</section>
<section>斜拉偶极天线无法通吃所有短波频段，一般设计为适配7MHz(兼顾3～12MHz）主流短波广播黄金频段，单臂长度10&ndash;11米，双臂总长度20&ndash;22米，搭配普通50&Omega;同轴电缆馈线即可。</section>
<section>&nbsp;</section>
<section>制作安装要点：</section>
<section>斜拉偶极是中心点馈电，馈电点悬挂在同一个高处，左右两根等长振子向相反方向双双向下斜拉，几何上做到对称。每一根振子相对水平面，推荐向下倾斜25&deg;‑35&deg;，30&deg;为黄金角度，两根振子张开总夹角控制在110‑130&deg;。倾斜越平缓，越接近水平偶极，远距离短波接收性能越好。</section>
<section></section>
<section>建议搭配1:1巴伦，抑制同轴馈线外皮射频电流，减少干扰；该天线无源状态下Q值高，信号损耗低，是简易天线中信号纯度、选择性、灵敏度综合最优的款式。</section>
<section></section>
<section>&nbsp;</section>
<section><strong>优缺点总结：</strong></section>
<section>核心优势：抗干扰能力更强、高低频段均衡、选择性好、灵敏度拉满。对比长线、倒L天线，底噪大幅降低，远程弱台、微弱小众电台能清晰解锁，少有杂音干扰。</section>
<section>&nbsp;</section>
<section>不足之处：相比前两款，需要更多的空间和材料，天线尺寸要求更精准，很难通吃所有频段，搭建过程也更为复杂。</section>
<section></section>
<section>特别提醒：室外架设天线必须加装避雷器！雷雨断开天线。</section>
<section></section>
<section>以上给大家介绍了三种简单、易制作的室外天线，希望对朋友们有所帮助。可能有的地方并不具备搭建室外天线的条件，下次给大家分享几款同样简单、易制作，而且性能相当不错的室内短波天线。</section>]]></description>
    <pubDate>Thu, 06 Aug 2026 08:01:00 +0800</pubDate>
    <dc:creator>广播发烧网</dc:creator>
    <guid>https://5bcl.com/accessories/4720.html</guid>
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    <title>2AP9：当年矿石收音机的神级选择，如今已走下神坛</title>
    <link>https://5bcl.com/Circuit_maintenance/4717.html</link>
    <description><![CDATA[<!--?xml encoding="utf-8" ?-->
<section>玩矿石收音机、怀旧无线电的老玩家，没人不知道2AP9。</section>
<section>&nbsp;</section>
<section>在七八十年代的全民电子热潮里，这枚小小的锗二极管，是无数爱好者的&ldquo;启蒙神器&rdquo;。一卷漆包线、一只高阻耳机，再配上一枚几毛钱的2AP9，就能组装出一台无需电源即可收听广播的矿石收音机。</section>
<section>&nbsp;</section>
<section>在那个物资匮乏、电子元件稀缺的年代，2AP9是公认的&ldquo;神管&rdquo;，是国产矿石收音机、再生来复机，甚至量产商品收音机的首选。</section>
<section>&nbsp;</section>
<section>&nbsp;</section>
<section><strong>一、时代红利：属于2AP9的黄金年代</strong></section>
<section><strong>&nbsp;</strong></section>
<section>想要读懂2AP9的传奇，首先要读懂它诞生的时代。</section>
<section>&nbsp;</section>
<section>上世纪60年代，国内民用电子产业刚刚起步，普通无线电爱好者的配件选择极度贫瘠。彼时，进口优质锗检波管1N系列、OA系列渠道稀缺、价格昂贵，普通学生和爱好者根本无缘接触。</section>
<section>&nbsp;</section>
<section>就在这样的市场空白下，国产2AP9锗检波二极管横空出世，成为时代刚需下的最优解。</section>
<section>&nbsp;</section>
<section style="text-align: center; visibility: visible;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/d372f7875b0d2eb164d5128689721e07.jpg"></section>
<section>作为国产第一代标准化点接触型锗检波管，2AP9实现了量产平价、性能适配、极易购买三大优势，供销社、电子门市随处可购，单只价格仅几毛钱，是全民DIY热潮里容易获取的核心元件。</section>
<section>&nbsp;</section>
<section>几乎所有老教材、老图纸、期刊教程，全部以2AP9为标准器件设计，几代无线电爱好者的入门之路，都由这枚小管子铺垫，&ldquo;神管&rdquo;的口碑，就此深入人心。</section>
<section>&nbsp;</section>
<section><strong>二、硬核参数解密：当年封神的三大核心优势</strong></section>
<section>&nbsp;</section>
<section>1. 超低开启电压，弱信号检波天花板</section>
<section>&nbsp;</section>
<section>去掉黑漆的2AP9</section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/482c5dec7ff28d989ca8d098ff4373a1.jpg"></section>
<section>这是2AP9最核心的王牌优势。作为锗材质点接触二极管，它的微电流开启电压仅0.2V左右，极低的导通阈值，能响应微弱无线电信号，在当年只玩中波广播的主流场景下，2AP9的弱台灵敏度，就是无可替代的&ldquo;硬实力&rdquo;。</section>
<section></section>
<section>(本文首发平台为公众号&ldquo;杂七杂八小科普&rdquo;，转发平台为头条号&ldquo;杂七杂八小科普&rdquo;，其余平台和账号均为搬运剽窃。)</section>
<section>&nbsp;</section>
<section>2. 天然适配再生电路</section>
<section>&nbsp;</section>
<section>老一辈玩家偏爱再生机，而2AP9是适配再生电路的绝佳器件。</section>
<section>&nbsp;</section>
<section>它存在轻微且可控的反向漏电流，常温下反向漏电流100nA左右，这种轻微漏电不会造成太多信号损耗，反而能形成柔和的内部反馈，让再生电路更容易调整到最佳接收状态，不易出现啸叫、失控的问题。</section>
<section>&nbsp;</section>
<section>反观如今低漏电的肖特基管，反馈偏弱，再生效果生硬，新手很难调出细腻的接收状态。在再生机盛行的年代，2AP9的这一特性，堪称&ldquo;量身定制&rdquo;。</section>
<section></section>
<section>&nbsp;3. 参数稳定、无需挑管，容错率极高</section>
<section>&nbsp;</section>
<section>早期进口锗管参数参差不齐、劣质管频发，而国产标准化量产的2AP9，批次一致性极佳。</section>
<section>&nbsp;</section>
<section>新手随便拿一只上机，无需筛选、无需调试，机器就能稳定发声，不会出现无声、底噪大、选择性差的问题。对于全民普及的DIY热潮来说，这种&ldquo;省心好用&rdquo;的特性，很受大众欢迎。</section>
<section>&nbsp;</section>
<section>凭借这三大优势，2AP9稳稳统治了国内数十年的入门无线电市场，成为无数人心中无可替代的经典。</section>
<section>&nbsp;</section>
<section><strong>三、时代迭代：两大硬伤，让2AP9走下神坛</strong></section>
<section>&nbsp;</section>
<section>情怀归情怀，时代在前进，近年来FM矿石收音机蓬勃兴起，2AP9不再满足检波二极管的技术要求。</section>
<section></section>
<section>&nbsp;</section>
<section>1. 结电容过大，高频性能彻底拉垮</section>
<section>&nbsp;</section>
<section>这是2AP9最致命的短板。</section>
<section>&nbsp;</section>
<section>各种检波二极管</section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/5eb5333b3da13cb37df72a99f9103ec1.jpg"></section>
<section>对比当下主流检波二极管：2AP9结电容30&ndash;60pF，BAT85仅10pF，1N60P低至1&ndash;3pF。</section>
<section>&nbsp;</section>
<section>到了88&ndash;108MHz FM调频频段，2AP9的大结电容会严重拖累LC谐振回路，大幅降低回路Q值，造成高频信号严重损耗、邻频串扰加剧、选择性急剧变差。</section>
<section>&nbsp;</section>
<section>这也是为什么用2AP9做FM矿石机，底噪大、弱台少、分离度差的原因。</section>
<section>&nbsp;</section>
<section>2. 工作频率不够。</section>
<section></section>
<section>很多爱好者会疑惑：2AP9手册标称最高工作频率可达100MHz，刚好覆盖88-108MHz调频波段，为什么做FM矿石机效果极差？</section>
<section>这里要区分纸面参数和实际电路场景：手册100MHz是有源电路测试条件，而无源矿石机依靠微弱天线信号工作，在此情况下，2AP9实际可用最高频率远远低于100MHz，无法胜任调频矿石机的检波需求。</section>
<section></section>
<section></section>
<section>3. &nbsp;库存稀缺，无全新量产，性能参差不齐</section>
<section>&nbsp;</section>
<section>如今的2AP9，早已停止新品量产，市面上流通的全部是四五十年前的老库存、拆机旧货。存放数十年的锗管，存在氧化、老化、参数衰减问题，同批次管子性能差异极大，部分老管灵敏度暴跌，上机效果极不稳定。曾经&ldquo;随便拿就能用&rdquo;的优势，彻底不复存在。</section>
<section>&nbsp;</section>
<section>时至今日，我们必须客观承认：2AP9早已走下性能神坛。在追求更低损耗、更高Q值的FM矿石收音机DIY中，老旧锗管的技术短板无法弥补，被新型肖特基二极管替代，是技术发展的必然结果。</section>
<section>&nbsp;</section>
<section>但我们永远不能否认2AP9的历史地位。它承载的怀旧情怀、启蒙意义，是任何新式元器件都无法替代的。</section>]]></description>
    <pubDate>Wed, 05 Aug 2026 07:09:00 +0800</pubDate>
    <dc:creator>广播发烧网</dc:creator>
    <guid>https://5bcl.com/Circuit_maintenance/4717.html</guid>
</item>
<item>
    <title>怒喷根德YB400收音机，世界名机又如何？</title>
    <link>https://5bcl.com/jiaoliu/4718.html</link>
    <description><![CDATA[<!--?xml encoding="utf-8" ?-->
<p style="text-align: center; line-height: 2em; visibility: visible;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; visibility: visible;"><span style="letter-spacing: 2px; visibility: visible;">怒喷一</span></span></p>
<p style="text-indent: 28pt; line-height: 2em; visibility: visible;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; visibility: visible;"><span style="letter-spacing: 2px; visibility: visible;">作者：</span></span><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none; visibility: visible;"><span style="letter-spacing: 2px; visibility: visible;">AD6YO</span><span style="letter-spacing: 2px; visibility: visible;">&nbsp; &nbsp; &nbsp;</span></span></p>
<p style="text-indent: 28pt; line-height: 2em; visibility: visible;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; visibility: visible;"><span style="letter-spacing: 2px; visibility: visible;">作者对此机的评分为1颗星，满分为5颗星。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em; visibility: visible;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; visibility: visible;"><span style="letter-spacing: 2px; visibility: visible;">我当初全新购入花了200美元，说实话，我认为它根本不值这个价</span></span><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none; visibility: visible;"><span style="letter-spacing: 2px; visibility: visible;">&mdash;&mdash;</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; visibility: visible;"><span style="letter-spacing: 2px; visibility: visible;">做工质量相当差。这机子在桌上放了三年，这期间零部件陆续出故障散架。</span></span></p>
<p style="margin-left: 0pt; text-indent: 0pt; line-height: 2em; visibility: visible;"><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none; visibility: visible;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/93c5f4289be12c3c2288662614d7f637.jpg"></span></p>
<p style="text-indent: 28pt; line-height: 2em; visibility: visible;"><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none; visibility: visible;"><span style="letter-spacing: 2px; visibility: visible;">▲图片：flanker</span></span></p>
<p style="text-indent: 28pt; line-height: 2em; visibility: visible;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; visibility: visible;"><span style="letter-spacing: 2px; visibility: visible;">电池</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; visibility: visible;"><span style="letter-spacing: 2px; visibility: visible;">供电电路</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; visibility: visible;"><span style="letter-spacing: 2px; visibility: visible;">已经彻底失效，装上电池后屏幕依旧提示无电源，只能一直插市电插座使用。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">中波</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">波段</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">彻底坏掉了</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">。</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">中波完全收不到任何信号，短波也勉强能工作。故障出现之后，拉杆天线直接脱落，我没法修好。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">这台收音机目前唯一能用的只有调频波段。我十分后悔买下它，估计也卖不出什么价钱。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">看完其他用户的评价之后，或许只是我这一台机子运气不好。其他人好像对它评价不错，孰难定论。但我能确定：日后我要是再买全新短波接收机，绝对不会选根德。</span></span></p>
<p style="text-align: center; line-height: 2em;"><span style="font-size: 14pt; font-family: 黑体; font-variant: normal; text-transform: none; font-weight: bold;"><span style="letter-spacing: 2px;">怒喷二</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">作者：</span></span><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">JLL711</span><span><span style="letter-spacing: 2px;">&nbsp; &nbsp; &nbsp;</span></span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">作者对此机的评分1颗星，满分为5颗星。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">我之前拥有过其他几款短波</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">收音机</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">，包括根德</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">S</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">700以及松下</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">RF2</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">200。我去美国无线电器材店RadioShack选购，出于便携性考虑，入手了这款</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">根德YB</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">400机型。把</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">YB</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">400带回家调试好之后，我完全听不到根德标志性的经典音质。就连我常听的中波谈话</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">类</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">电台它都接收不到，耳边只有一片噪声！多年来我一直聆听根德</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">S</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">700醇厚出色的声音，相比之下，这台&ldquo;废品摆设&rdquo;实在令人大失所望。</span></span></span><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><br></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/5303c762e8ae03050dac1b3d53a9dc42.jpg"></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">▲图片：flanker</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">我把机子拿回RadioShack退货，店里工作人员态度极差。客户满意度显然不是他们的优势。最后我再三坚持，才说服他们同意给我退款。今后我绝不会再在RadioShack购买任何商品。</span></span></p>
<p style="text-align: center; line-height: 2em;"><span style="font-size: 14pt; font-family: 黑体; font-variant: normal; text-transform: none; font-weight: bold;"><span style="letter-spacing: 2px;">怒喷三</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">作者：</span></span><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">LISTENER</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">作者对此机的评分1颗星，满分为5颗星。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">我在当地一家RadioShack门店购入这台机器。机子收来收去只有一片噪声。我拿它和索尼</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">ICF-</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">2010做了对比，索尼没有这种噪声问题，信号接收强劲、清晰。</span></span></p>
<p style="margin-left: 0pt; text-indent: 0pt; line-height: 2em;"><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/6e6c503bfc10abdfa308d68d53b26ec3.jpg"></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">如果你就喜欢听噪声，那</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">根德YB</span></span><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">400倒是挺适合你！</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">把本地/</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">远程</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">开关拨至本地档位时，这台</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">收音机</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">直接就&ldquo;聋了&rdquo;！几乎要坐到发射台旁边才能收到信号！</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">这机子直接退回RadioShack！我觉得拿两个纸杯连上棉线做成的土电话，接收效果都比这台机器要强！</span></span></p>
<p style="text-align: center; line-height: 2em;"><span style="font-size: 14pt; font-family: 黑体; font-variant: normal; text-transform: none; font-weight: bold;"><span style="letter-spacing: 2px;">怒喷四</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">作者：</span></span><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">RADIODORK</span><span><span style="letter-spacing: 2px;">&nbsp; &nbsp; &nbsp;</span></span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">作者对此机的评分1颗星，满分为5颗星。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">要么我买到了一台残次品，要么这款收音机被吹捧得言过其实。圣诞节前我想要这台机器，全是因为网上好评众多，而且外观看着很精致。结果大失所望。</span></span></p>
<p style="margin-left: 0pt; text-indent: 0pt; line-height: 2em;"><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/bd70368538b4e3f448353105e084252b.jpg"></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">在此之前，我拥有的短波收音机分别是根德S350（性能比</span></span><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">YB400</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">强十倍）、一台老式RadioShack Patrolman CB60对讲机接收机，还有一台廉价的科比收音机。先说一点：拉杆天线完全拉出后，天线头过重，容易晃动；天线一晃，机器就发出噼啪爆音。哪怕手指轻轻碰到机身面板，都会产生爆杂音。随机附带的</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">卷轴</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">外接天线也毫无改善。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">真正让人忍无可忍的是，我陆续发现很多根德S350能够稳定收到的频率，这台</span></span><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">YB400</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">一点信号影子都搜不到。我把两台机器一同放在楼上房间，关掉所有其他电器，接好</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">卷轴外接</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">天线，开始记录S350收到的电台，再尝试用</span></span><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">YB400逐个</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">接收。对比九个电台之后，我彻底放弃。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">和S350相比，它的音质同样令人失望。我发现它唯一可取之处就是普通调频波段接收尚可。但即便如此，卖这个价钱，仅仅当作一台便携</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">式</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">调频收音机也完全不值。另外，说明书上标注的技术支持渠道形同虚设，根本联系不上。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">所以我准备在亚马逊退货。真要是在本地Radio Shack购买就好了，不至于白白承担运费，还要被亚马逊收取众所周知的退货入库手续费。算是花钱买教训了。</span></span></p>
<p style="text-align: center; line-height: 2em;"><span style="font-size: 14pt; font-family: 黑体; font-variant: normal; text-transform: none; font-weight: bold;"><span style="letter-spacing: 2px;">怒喷五</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">作者：</span></span><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">VE1BLL</span><span><span style="letter-spacing: 2px;">&nbsp; &nbsp; &nbsp;</span></span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">作者对此机的评分1颗星，满分为5颗星</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">今天我在加拿大The Source门店花39.96加元购入一台，想着折扣力度这么大，机子表现应该还算过得去。结果不到两小时，我就拿去退货退款了。</span></span></p>
<p style="margin-left: 0pt; text-indent: 0pt; line-height: 2em;"><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/63f5504da282fc6d834d1ad0588aa52e.jpg"></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">在我看来，整机做工与握持质感很差，充满廉价感。机器本身自带底噪，和正常预想里的大气射电噪声完全不一样。开启拍频振荡器（BFO）之后令人失望，基本形同虚设。拉杆天线晃动松动，看着就让人心里不踏实。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">总而言之，我认为它连40加元都不值，于是重新装箱办理了退货。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">免得大家觉得我的评价有失公允：我同期还入手了一台伊顿E10，这台机子值得留下使用，我接下来会专门写它的评测。</span></span></p>
<p style="line-height: 2em; margin-bottom: 0px;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">来源：eham.net</span></span></p>]]></description>
    <pubDate>Tue, 04 Aug 2026 17:42:00 +0800</pubDate>
    <dc:creator>广播发烧网</dc:creator>
    <guid>https://5bcl.com/jiaoliu/4718.html</guid>
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    <title>收音机三大高级功能：二次变频、锁相环、同步检波，一文讲清楚</title>
    <link>https://5bcl.com/Circuit_maintenance/4715.html</link>
    <description><![CDATA[<!--?xml encoding="utf-8" ?-->
<section>玩收音机的朋友都知道，普通收音机和中高档收音机，核心差距并不在波段多少、外形大小、外壳做工，而在于三项硬核电路技术：二次变频、锁相环（PLL）、同步检波（SYNC）。很多新手并不清楚这三个功能，今天就用通俗语言，把原理、作用一次性讲透。</section>
<section>&nbsp;</section>
<section><strong>一、二次变频：根治短波&ldquo;镜像干扰&rdquo;，提高选择性</strong></section>
<section style="text-align: center; visibility: visible;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/e42901226be1d300478ff1145abf1bdf.jpg"></section>
<section></section>
<section>首先明确的是，镜像干扰是超外差电路与生俱来的短板，有本振就必然有镜像。</section>
<section></section>
<section>下面以接收7MHz短波节目为例，详解一次变频vs二次变频的区别。</section>
<section>&nbsp;</section>
<section><strong>1、一次变频（中频455kHz）接收7MHz短波节目的情况</strong></section>
<section>&nbsp;</section>
<section>目标频率：7MHz</section>
<section>中频：455kHz</section>
<section>&nbsp;</section>
<section>本振频率=目标频率+中频频率=7MHz+455kHz=7.455MHz</section>
<section></section>
<section>镜像频率=本振频率+中频频率=7.455MHz+455kHz=7.91MHz</section>
<section>&nbsp;</section>
<section>那么问题来了，如果7.91MHz恰好有其他电台/干扰信号，因为镜像频率7.91MHz和目标频率7MHz非常邻近，会一同进入天线LC回路，和7.455MHz本振混频，一同输出455kHz中频信号，再一起进入中频放大、检波电路，最终出现两个声音叠加，也就是串台、镜像干扰。</section>
<section>&nbsp;</section>
<section><strong>2、二次变频（第一中频10.7MHz，第二中频455kHz）接收7MHz短波节目</strong></section>
<section>&nbsp;</section>
<section>第一步：第一次变频（高中频10.7MHz）</section>
<section>&nbsp;</section>
<section>目标频率：7MHz，</section>
<section>第一中频：10.7MHz</section>
<section></section>
<section>第一本振：7MHz+10.7MHz=17.7MHz</section>
<section>镜像频率=17.7MHz+10.7MHz=28.4MHz</section>
<section></section>
<section>此时目标频率7MHz和镜像频率28.4MHz，相差21.4MHz，间隔极大；收音机前端的天线调谐LC回路，可以轻松把28.4MHz的镜像干扰彻底滤除，不会进入后级电路。</section>
<section>&nbsp;</section>
<section><strong>第二步：第二次变频（低中频455kHz）</strong></section>
<section>&nbsp;</section>
<section>经过第一次变频、滤波后的纯净10.7MHz中频信号，再和第二本振混频，降为455kHz标准低中频，再进行放大、检波输出声音。</section>
<section>&nbsp;</section>
<section>可以看出二次变频核心作用，在于把第一中频拉高，大幅拉开目标信号与镜像频率的间距，前端简单调谐回路就能过滤镜像，从根源解决串台问题。</section>
<section>&nbsp;</section>
<section>&nbsp;</section>
<section>二、锁相环（PLL）：告别机械调频漂移，实现精准锁台</section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/c8936fd4078feb24e3e742f7f826b1f0.jpg"></section>
<section></section>
<section>锁相环的核心原理，是用高精度石英晶体产生稳定基准频率，鉴相器实时对比本地振荡信号和晶体基准的频率、相位差，并自动修正调节，最终输出一个高度稳定、几乎不随温度、电压、元件老化漂移的本振频率。</section>
<section></section>
<section>(本文首发平台为公众号&ldquo;杂七杂八小科普&rdquo;，转发平台为头条号&ldquo;杂七杂八小科普&rdquo;，其余平台和账号均为搬运剽窃。)</section>
<section>&nbsp;</section>
<section>我们依然用7MHz目标电台举例说明：</section>
<section>&nbsp;</section>
<section>&nbsp;</section>
<section>1. 机械调谐：本振靠LC可变电容产生，理论需要7MHz+455kHz=7.455MHz。但温度、电压等变化会让LC本振7.455频率漂移，比如漂移为7.425或者7.485，7MHz目标电台就会慢慢跑台、声音模糊。</section>
<section>2. 改成PLL锁相环调谐：</section>
<section></section>
<section>PLL依靠高精度晶振基准+鉴相器，将本振锁定在7.455MHz，全程不会频漂，7MHz电台可以长时间稳定收听。</section>
<section>但镜像干扰问题依旧存在：邻台串台、镜像干扰的短板，一次变频+PLL解决不了。</section>
<section>&nbsp;</section>
<section>所以主流方案采用二次变频+PLL锁相环，第一本振用PLL频率合成输出稳定17.7MHz，既解决一次变频的镜像串台，又靠PLL杜绝频率漂移。</section>
<section></section>
<section>&nbsp;</section>
<section><strong>三、同步检波：解决信号衰减、串台干扰</strong></section>
<section>&nbsp;</section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/7502dec3e477d9639bff973852aaadf1.jpg"></section>
<section>还是以接收7MHz短波调幅广播为例，通俗讲解同步检波（SYNC）</section>
<section>&nbsp;</section>
<section>我们收听的7MHz调幅（AM）短波广播，信号结构分为三部分：</section>
<section>&nbsp;</section>
<section>1. 中心载波：7MHz，是整个电台信号的频率基准，但不包括声音信息。</section>
<section>2. 上边带USB：频率高于7MHz，承载节目声音信息。</section>
<section>3. 下边带LSB：频率低于7MHz，同样承载节目声音信息。</section>
<section></section>
<section>普通收音机的包络检波，会把载波、上边带、下边带全部一起解调出来。</section>
<section>&nbsp;</section>
<section>那就存在两大问题：</section>
<section>&nbsp;</section>
<section>问题1：短波选择性衰减（声音忽大忽小、沙哑&ldquo;鸭子叫&rdquo;）</section>
<section>&nbsp;</section>
<section>7MHz短波靠电离层反射传播，大气层气象、昼夜变化会让电波各部分衰减速度不一样：有时候7MHz载波变弱，但上下边带还很强；有时候其中一个边带大幅衰减。</section>
<section>包络检波必须依靠稳定的载波才能正常还原声音，载波变弱后，声音就会持续起伏、失真沙哑，也就是烧友常说的衰落杂音。</section>
<section>&nbsp;</section>
<section>问题2：夜间邻台串台干扰</section>
<section>&nbsp;</section>
<section>夜间短波电台密集，7MHz附近会有6.99MHz、7.01MHz等相邻电台，它们的边带信号会和7MHz电台的边带互相重叠，普通包络检波无法区分，收听时多个声音混在一起。</section>
<section>&nbsp;</section>
<section>但如果采用同步检波，情况就不一样了（需要PLL锁相环配合）</section>
<section>&nbsp;</section>
<section>1. 第一步：PLL锁定7MHz载波（必备前提）</section>
<section>&nbsp;</section>
<section>锁相环先捕捉7MHz电台的原始载波，在电路内部复刻出一路和7MHz载波完全同频率、同相位的纯净本地同步载波，不受电离层衰落影响，频率全程稳定。</section>
<section>&nbsp;</section>
<section>2. 第二步：同步检波两种工作模式（针对7MHz信号）</section>
<section>&nbsp;</section>
<section>模式1：改善衰减失真</section>
<section>&nbsp;</section>
<section>开启同步检波后，用电路内部稳定的7MHz本地同步载波，替代空中已经变弱、不稳定的原始载波来解调边带。</section>
<section>哪怕空中7MHz原载波因为电离层原因衰减消失，本地同步载波依然稳定，上下边带里的声音信息可以正常还原，消除声音忽大忽小的衰落失真。</section>
<section>&nbsp;</section>
<section>模式2：单边带选择，避开邻台串台</section>
<section>&nbsp;</section>
<section>同步检波可以手动切换，单独解调7MHz上边带（USB），或者下边带（LSB）。</section>
<section></section>
<section>举例：7.01MHz邻台的干扰信号主要叠加在7MHz上边带，我们切换到只解调7MHz下边带，就能直接避开邻台干扰，只收听干净的7MHz广播节目。</section>
<section>&nbsp;</section>
<section></section>
<section>&nbsp;总的来说，二次变频负责&ldquo;滤除镜像干扰&rdquo;，锁相环负责&ldquo;稳住频率不漂移&rdquo;，同步检波负责&ldquo;分离串台、改善衰减失真&rdquo;，这三项技术，往往就是区分普通收音机和中高端收音机的核心标尺。</section>
<section></section>]]></description>
    <pubDate>Tue, 04 Aug 2026 06:07:00 +0800</pubDate>
    <dc:creator>广播发烧网</dc:creator>
    <guid>https://5bcl.com/Circuit_maintenance/4715.html</guid>
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    <title>十大便携式短波收音机榜单（2025），国产收音机霸榜！</title>
    <link>https://5bcl.com/radio/4716.html</link>
    <description><![CDATA[<!--?xml encoding="utf-8" ?-->
<p style="margin: 0px 0pt; text-align: center; line-height: 2em; break-after: auto; visibility: visible;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000; visibility: visible;"><span style="letter-spacing: 2px; visibility: visible;">作者：凯文，发布于2025年2月22日</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto; visibility: visible;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000; visibility: visible;"><span style="letter-spacing: 2px; visibility: visible;">网上绝大多数&ldquo;十大榜单&rdquo;都粗制滥造。我曾看到一份十大短波收音机榜单，其中两款机型甚至根本无法接收短波！本次榜单我认真甄选，正文不含任何推广返利链接。筛选机型时，我重点考量：有哪些新品、哪些机型具备亮点？产品核心价值体现在哪里？同档位下它凭什么脱颖而出，又是什么理由能让用户买得称心？</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto; visibility: visible;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000; visibility: visible;"><span style="letter-spacing: 2px; visibility: visible;">以下便是我的十大机型榜单。机型按名称字母顺序排列，不存在绝对优劣&mdash;&mdash;适合与否取决于用户需求与预算。榜单仅收录目前仍全新在售的机型，标价仅供参考，采样价格取自2025年2月22日美国亚马逊。收音机时常有促销活动，二手渠道也能淘到价格优惠的机器 。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em; margin-top: 0px; margin-bottom: 0px; visibility: visible;"><span style="font-size: 14pt; font-family: 黑体; font-variant: normal; text-transform: none; font-weight: bold; visibility: visible;"><span style="letter-spacing: 2px; visibility: visible;">一、可瑞恩天波SSB2</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto; visibility: visible;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000; visibility: visible;"><span style="letter-spacing: 2px; visibility: visible;">这份榜单按字母排序，这款可瑞恩天波SSB2实际上是最后增补进来的机型。起初我十分犹豫，但该机用户的评价普遍口碑极佳。我把初选的9款机型草稿发给微软Copilot，AI向我推荐加入这一台。</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 0pt; line-height: 2em; break-after: auto; visibility: visible;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/935ac07ef7ce8f6de043b2d6a29213a5.jpg"></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">可瑞恩天波SSB2集三大特色功能于一身：单边带（SSB）、航空波段、气象预警。唯一缺少的功能大概就是手电筒了。型号后缀数字&ldquo;2&rdquo;代表新版，据称单边带接收性能有所提升，短波完整覆盖1711千赫至29999千赫。本机自带喇叭音质一般，多数人会搭配耳机使用。</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">入选理由：</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">支持航空波段</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">气象波段，并配有</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">气象预警功能</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">可接收</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">单边带</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">机身紧凑小巧</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">选择性与接收灵敏度表现亮眼</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">航空波段配备静噪功能</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">单次充电续航持久</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">。</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">缺点：</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">不能接收长波信号。</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">售价：179.99 美元</span></span></p>
<p style="text-indent: 28pt; line-height: 2em; margin-top: 0px; margin-bottom: 0px;"><span style="font-size: 14pt; font-family: 黑体; font-variant: normal; text-transform: none; font-weight: bold;"><span style="letter-spacing: 2px;">二、朝元LC90</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">这款收音机分为标准版与迷你版。它除了能接收空中无线电信号，还支持网络电台流媒体播放。</span></span></p>
<p style="margin-top: 0px; margin-right: 0pt; margin-bottom: 0px; text-align: left; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/f1cbb3e512ca27a73ac92a3a5fa8a2cd.jpg"></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">以下是标准版入选理由：</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">短波完整覆盖2300千赫至29999千赫，同时支持中波、长波、调频</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">支持单边带</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">综合接收性能良好，虽不算顶级，但表现稳定</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">独有的网络流媒体功能，搭载 ChatGPT 语音引擎实现语音搜台</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">厂商持续提供大量空中升级固件，售后支持完善</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">配备双 15 瓦</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">喇叭</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">，含低音单元与高音单元，宣传为立体声模式，该描述来自亚马逊商品页面，但很多用户反馈</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">喇叭</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">并非立体声，此点存疑</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">除Wi-Fi之外，还可插入SIM卡联网</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">。</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">售价：249 美元</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">LC90迷你版体积更小，取消立体声喇叭、外接天线接口与独立微调旋钮，电池容量缩减且不可更换。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em; margin-top: 0px; margin-bottom: 0px;"><span style="font-size: 14pt; font-family: 黑体; font-variant: normal; text-transform: none; font-weight: bold;"><span style="letter-spacing: 2px;">三、伊顿精英执行官</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">几年前有人在网上分享消息：Woot商城清仓抛售伊顿精英执行官，售价仅79.99美元，不到原价一半，我至今心存感激。【更新：2025 年4月，eBay全新机售价跌至 50 美元区间】 推荐这款机器的依据，来源于我长期实际使用体验，而非单纯参数表。</span></span></p>
<p style="margin-top: 0px; margin-right: 0pt; margin-bottom: 0px; text-align: left; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/324c0725ec8d474491edb84d1168bbb6.jpg"></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">入选理由：</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">外观做工质感上乘</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">显示屏清晰度高，支持多级背光，各类光线环境下都便于阅读</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">频率直输操作高效便捷</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">调频广播数据系统（RDS）优化出色</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">支持单边带</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">综合接收性能优秀</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">配套使用</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">说明书</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">编写详尽专业</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">覆盖航空波段</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">。</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">缺点：</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">部分功能操作逻辑复杂，需要时常查阅说明书</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">ATS仅支持调频波段</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">储存电台</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">操作繁琐</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">售价：80.12 美元</span></span></p>
<p style="text-indent: 28pt; line-height: 2em; margin-top: 0px; margin-bottom: 0px;"><span style="font-size: 14pt; font-family: 黑体; font-variant: normal; text-transform: none; font-weight: bold;"><span style="letter-spacing: 2px;">四、科多笙DX-286</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">声明：科多笙厂商寄送本机供我测评。我已经围绕DX-286 撰写过多篇测评文章。除去单边带接收需求外，这是我日常主力收音机。定价适中，接收性能出众。</span></span></p>
<p style="margin-top: 0px; margin-right: 0pt; margin-bottom: 0px; text-align: left; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/be829263229f7fb75f2f30e5986be224.jpg"></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">入选理由：</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">调频、短波波段接收表现优异</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">搭配外接天线时，长波接收效果极佳</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">自定义功能丰富：可调谐</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">步进</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">、可关闭天线放大器、支持衰减开关</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">调频RDS系统体验良好</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">搭载静噪功能</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">ATS扫描精准，预存电台存储空间充足</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">支持调节ATS扫描灵敏度</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">可同时显示世界时与本地时间</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">频率直输高效（和伊顿</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">精英执行官</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">操作逻辑相近）</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">机身十分小巧（尺寸：13.41cm &times; 3cm &times; 7.6cm）</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">长波、中波可外接天线，拉杆天线同样适用</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">。</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">缺点：</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">不支持单边带</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">短波最高接收频率仅到27000千赫</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">耗电量略高于同类机型</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">。</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">售价：79.99 美元（不含电池）；89.99 美元（附赠两节18650锂电池）&nbsp;</span></span></p>
<p style="text-indent: 28pt; line-height: 2em; margin-top: 0px; margin-bottom: 0px;"><span style="font-size: 14pt; font-family: 黑体; font-variant: normal; text-transform: none; font-weight: bold;"><span style="letter-spacing: 2px;">五、山进909X2</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">我曾在网上发起非正式投票，让爱好者评选心仪机型，几乎所有人都推选这一款。多年来909系列饱受不少诟病，但X2版本基本解决了前代所有重大缺陷。</span></span></p>
<p style="margin-top: 0px; margin-right: 0pt; margin-bottom: 0px; text-align: left; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/5933d6895912ce11b5e82f36ff7981e3.jpg"></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">核心优势：</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">长波、中波支持外接天线</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">单边带</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">静噪功能</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">大屏幕显示屏</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">调台无噪音、无静默卡顿现象</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">灵敏度与选择性向来口碑出众</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">整机做工扎实</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">。</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">缺点：</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">没有独立调谐旋钮，仅配备飞梭滚轮</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">在便携机型里体积偏大（尺寸：20.7cm &times; 13.5cm &times; 4cm）</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">售价：311.86 美元</span></span></p>
<p style="text-indent: 28pt; line-height: 2em; margin-top: 0px; margin-bottom: 0px;"><span style="font-size: 14pt; font-family: 黑体; font-variant: normal; text-transform: none; font-weight: bold;"><span style="letter-spacing: 2px;">六、斯华东R108</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">我时常容易忽略这台机器，但它性能稳定，遇到促销时性价比极高。</span></span></p>
<p style="margin-top: 0px; margin-right: 0pt; margin-bottom: 0px; text-align: left; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/c47ba87fc283a88ba79df6c1c6891314.jpg"></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">入选十大榜单理由：</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">促销期价格低廉</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">覆盖航空波段</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">短波预存电台容量充足，可存300个；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">使用内置天线时，中波接收效果优秀</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">整机综合性能稳定</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">机身小巧便携</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">。</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">缺点：</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">无单边带</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">无调频RDS功能</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">频率直输操作不便</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">。</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">售价：59.90 美元</span></span></p>
<p style="text-indent: 28pt; line-height: 2em; margin-top: 0px; margin-bottom: 0px;"><span style="font-size: 14pt; font-family: 黑体; font-variant: normal; text-transform: none; font-weight: bold;"><span style="letter-spacing: 2px;">七、德生PL330</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">2022年我购入PL330替换旧款PL380，一来短波上限拓展至29999千赫，二来新增单边带功能，现在它是我的随身旅行收音机。机身小巧轻便，省电耐用。</span></span></p>
<p style="margin-top: 0px; margin-right: 0pt; margin-bottom: 0px; text-align: left; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/ac7390301bd1745f34ebc8d97b78b48f.jpg"></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">入选理由：</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">紧凑轻便、能耗低</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">自动搜台与电台存储系统是同类机型标杆</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">支持单边带</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">提供多种带宽模式可选</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">综合接收性能良好</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">外接天线接口可用于长波、中波接收</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">同步检波调谐模式</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">。</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">缺点：</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">无调频RDS</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">不支持航空波段</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">按键偏小，按压手感一般</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">没有独立细调旋钮</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">。</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">偏好竖版手持机型的爱好者，可以考虑规格相近的PL368。</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">售价：79.98 美元</span></span></p>
<p style="text-indent: 28pt; line-height: 2em; margin-top: 0px; margin-bottom: 0px;"><span style="font-size: 14pt; font-family: 黑体; font-variant: normal; text-transform: none; font-weight: bold;"><span style="letter-spacing: 2px;">八、德生PL990</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">这是一台高端旗舰机型。我使用已有一年半，在eBay凯托美国店淘的二手机，价格远低于全新售价，机器外观近乎全新且配件齐全。</span></span></p>
<p style="margin-top: 0px; margin-right: 0pt; margin-bottom: 0px; text-align: left; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/995ba1041ea0eba1eb48f6e979c28b43.jpg"></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">入选理由：</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">做工精良</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">外放音质出色</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">单边带接收</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">配备独立</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">微调</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">旋钮</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">支持音频文件播放，可充当蓝牙音箱</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">就我所知，调频接收能力属于第一梯队</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">调台无静音、无杂音；采用三次变频超外差架构搭配DSP解调与可调带宽</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">长波、中波支持外接天线</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">电台存储容量充裕</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">。</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">缺点：</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">售价偏高。</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">售价：269 美元</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">我对 PL990 的多数评价同样适用于尺寸更小、价格便宜不少的 PL880；但PL880不支持中波、长波外接天线，也无法播放音频文件、没有蓝牙功能。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em; margin-top: 0px; margin-bottom: 0px;"><span style="font-size: 14pt; font-family: 黑体; font-variant: normal; text-transform: none; font-weight: bold;"><span style="letter-spacing: 2px;">九、信怀德D808</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">我的这台XHDATA D-808已经使用数年，接收稳定可靠。虽然有几处设计细节不合我个人习惯，但客观来看是一款值得入手的机型。我手上有性能更好的收音机，因此日常很少使用它，一般只用来做各类测试。</span></span></p>
<p style="margin-top: 0px; margin-right: 0pt; margin-bottom: 0px; text-align: left; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/3a39d8520db40af1e91511f1e16aa14f.jpg"></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">入选理由：</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">短波接收表现稳定</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">单边带</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">航空波段</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">中波接收水准高于同价位平均水平，中波爱好者常会对本机进行改装，进一步提升性能</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">使用</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">说明书</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">完善（2024 修订版）</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">缺点：</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">频率直输操作繁琐</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">自动搜台与电台存储布局设计不合理</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">音量旋钮设在机身左侧，不符合多数人使用习惯</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">。</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">售价：108美元</span></span></p>
<p style="text-indent: 28pt; line-height: 2em; margin-top: 0px; margin-bottom: 0px;"><span style="font-size: 14pt; font-family: 黑体; font-variant: normal; text-transform: none; font-weight: bold;"><span style="letter-spacing: 2px;">十、知维斯ZWS-2415</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">这款机型在榜单里算是比较特殊的存在，我认为榜单应当纳入一款应急收音机。它算不上市面上最强机型，但价位合理、性能稳定，也是本榜单唯一一款支持甚高频（VHF）接收的设备。</span></span></p>
<p style="margin-top: 0px; margin-right: 0pt; margin-bottom: 0px; text-align: left; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/ce4547d9abe3c277841037d15d2f69ad.jpg"></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">核心亮点：</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">内置10000毫安时应急电源</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">依靠本机电池，气象预警功能可持续运行一周</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">气象波段接收灵敏度极高</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">调频波段灵敏度出众</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">全套经典应急功能：太阳能充电、手摇发电、手电筒、警报器、对外充电、阅读灯</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">IPX4级防泼溅</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">各波段独立ATS自动搜台，每波段可预存99个电台</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">甚高频覆盖：30.00&ndash;199.975兆赫</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">支持蓝牙、U 盘、音频输入播放音乐</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">操控逻辑直观易懂</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">。</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">缺点：</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">无温度显示功能</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">；</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">附近有大功率广播电台时，低端甚高频频段容易出现信号过载干扰</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">。</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">售价：42.77 美元</span></span></p>
<p style="text-indent: 28pt; line-height: 2em; margin-top: 0px; margin-bottom: 0px;"><span style="font-size: 14pt; font-family: 黑体; font-variant: normal; text-transform: none; font-weight: bold;"><span style="letter-spacing: 2px;">★榜单缺失的收音机类型</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">我注意到这份清单里所有机型都</span></span><strong style="font-weight: bold; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">不带录音功能</span></strong><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">。想要录音功能可以选择这些型号：德生Q3、汉荣达HRD-757、Raddy RF75A、知维斯ZWS-603、凯托KA29、利佳尼Rd239。同时榜单也没有收录宽带扫频接收机。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em; margin-top: 0px; margin-bottom: 0px;"><span style="font-size: 14pt; font-family: 黑体; font-variant: normal; text-transform: none; font-weight: bold;"><span style="letter-spacing: 2px;">★落选机型说明</span></span></p>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">不少机型没能进入这份带有一定主观筛选标准的榜单。其中有些我十分希望纳入，但已经停产无全新货源；其余落选机型如下：</span></span></p>
<h3 style="line-height: 2em; margin-top: 0px; margin-bottom: 0px; text-indent: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">①</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">ATS25 max-Decoder</span></span></h3>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">ATS25系列机型很有特色，也方便携带，但我不把它归为便携手持收音机。日常收听很少有人手持使用，更适合硬件折腾、实验调试，单纯用来收听广播的话，不如榜单内机型实用。</span></span></p>
<h3 style="line-height: 2em; margin-top: 0px; margin-bottom: 0px; text-indent: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">②孔雀石</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">DSP2</span></span></h3>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">售价过高，性价比不足。</span></span></p>
<h3 style="line-height: 2em; margin-top: 0px; margin-bottom: 0px; text-indent: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">③</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">德生H501</span></span></h3>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">机器本身素质出色，但定价昂贵，体积也已经接近便携机型尺寸上限。</span></span></p>
<h3 style="line-height: 2em; margin-top: 0px; margin-bottom: 0px; text-indent: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">④信怀德</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">D-109、D-109WB</span></span></h3>
<p style="margin: 0px 0pt; text-align: left; text-indent: 28pt; line-height: 2em; break-after: auto;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none; color: #000000;"><span style="letter-spacing: 2px;">两款机型综合实力不错，设计美观、音质悦耳、操作顺手，预算有限的短波爱好者完全可以考虑。缺点是靠近大功率广播电台时极易出现信号过载。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em; margin-top: 0px; margin-bottom: 0px;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">来源：blogordie</span></span></p>
<p style="text-indent: 28pt; line-height: 2em; margin-top: 0px; margin-bottom: 0px;"><span style="font-size: 14pt; font-family: 黑体; font-variant: normal; text-transform: none; font-weight: bold;"><span style="letter-spacing: 2px; color: #ff0000;">★译介有话说</span></span></p>
<p style="text-indent: 28pt; line-height: 2em; margin-top: 0px; margin-bottom: 0px;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">看了这个榜单，我颇为感慨，因为除了孔雀石DSP2之外，上文所列的其余收音机，有一个算一个，都是我们国内工程师研发设计、国内工厂生产的。从某种程度上说，国内收音机实现了霸榜。用一句时髦的话的来说，国产收音机支楞起来了！</span></span></p>
<p style="text-indent: 28pt; line-height: 2em; margin-top: 0px; margin-bottom: 0px;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">朋友，您怎么看？请在评论区留言！</span></span></p>]]></description>
    <pubDate>Mon, 03 Aug 2026 17:14:00 +0800</pubDate>
    <dc:creator>广播发烧网</dc:creator>
    <guid>https://5bcl.com/radio/4716.html</guid>
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    <title>墙里开花墙外香，上世纪华谱收音机的来龙去脉</title>
    <link>https://5bcl.com/jiaoliu/4714.html</link>
    <description><![CDATA[<!--?xml encoding="utf-8" ?-->
<section>很少有人知道，在改革开放初期珠三角的外销浪潮里，诞生过一个收音机品牌&mdash;&mdash;华谱Panopus。它做工讲究，性能优良，却先在海外大量销售，多年后才悄悄传回国内玩家视野，完美诠释了&ldquo;墙里开花墙外香&rdquo;这句老话，也是国产便携短波收音机发展史上一段低调又精彩的往事。</section>
<section>&nbsp;</section>
<section><strong>一、华谱品牌溯源：外销代工起家，后期转而内销</strong></section>
<section>&nbsp;</section>
<section>工厂最初名称为塘厦华阳电子厂，建于1984年，最初为港资投资、落户于广东东莞塘厦工业区，是东莞早期专门承接欧美收音机OEM整机代工的生产线。早期100%产能用于外贸代工，整机以根德、西门子贴牌销往欧洲各国，国内没有专柜铺货、没有广告宣传。直到90年代初期，海外订单出现富余产能，工厂才启用&ldquo;华谱Panopus&rdquo;自有品牌，推出R97T、R35W、R66W三款主力机型，通过无线电刊物邮购、发烧友圈子流通进入市场，此时国内玩家才恍然大悟：原来海外的这几款很有名气的收音机，产地一直就在国内！</section>
<section>&nbsp;</section>
<section><strong>二. 核心主力机型两款经典款详解</strong></section>
<section>&nbsp;</section>
<section>（1）华谱R97T：国产短波机性能标杆</section>
<section>&nbsp;</section>
<section style="text-align: center; visibility: visible;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/fa5c5cdfeb0c44976b6d69f061fa7079.jpg"></section>
<section>这是华谱系列知名度最高、玩家保有量最大的旗舰机型，也是90年代国内短波广播爱好者的热门选择，当年邮购零售价接近200元，远超咏梅、珠江袖珍机几十元的定价，属于不折不扣的高端机型。</section>
<section></section>
<section>R97T的海外贴牌为根德YB206 收音机，看下图是不是长的一模一样</section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/62eea6c2de97ab2dc3289d34b52c5148.jpg"></section>
<section></section>
<section>&nbsp;</section>
<section>核心电路与芯片参数：整机采用日本索尼原装CXA1019P单片收音集成电路，该芯片集成FM高频、AM混频、两级中频放大、AGC自动增益控制、AFC调频稳频、检波鉴频、电子音量、音频功放全功能电路，低功耗特性优秀。相比同期国产机常用的CXA1191M，CXA1019P动态范围更大、短波底噪抑制更好、弱台信噪比更高。</section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/fe50172d4991cb28e8e840201f30aed1.jpg"></section>
<section></section>
<section>波段覆盖：15波段全制式接收，包含调频FM（87&mdash;108MHz）、长波LW（153&mdash;279kHz）、中波MW（520&mdash;1710kHz）、12个短波专用米波段，完整覆盖BBC、VOA等国际广播常用频点，无需频繁切换频段，是当年少有的全波段便携机。</section>
<section></section>
<section>结构与工艺亮点：采用铜质滑轮阻尼调谐机构，全程顺滑无卡顿，指针走动稳定不跑偏；机内多处铝箔屏蔽层隔离各频段电路，减少串扰干扰；短波每一段配备独立LC选频线圈，而非简易共用线圈；扬声器选用国光1.5W全频单元，人声通透、低频饱满，音质优于同期多数国产多波段机；机身预留外接天线、外接电源、耳机插孔，拓展性完善，自带睡眠关机、单闹钟功能。</section>
<section>&nbsp;</section>
<section>（2）华谱R35W(顶配升级款R66W)：独有世界时区时钟，辨识度拉满</section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/42ccc6298b5de0d44639c2aa459eb65f.jpg"></section>
<section></section>
<section></section>
<section>&nbsp;</section>
<section>R35W的海外贴牌机型为根德Traveller II PE，和西门子RK702。看下图是不是和R35W长的一模一样</section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/04fbf097e07a9efb58c8f080d3bf736c.jpg"></section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/cf0796184bc95784e0144319619f0793.jpg"></section>
<section>这是华谱系列最有特色的机型，也是当年国内收音机里罕见搭载全球时区显示的款式。最大标志性亮点是面板内置世界时区地图液晶窗口：一次调好本地时间后，旋转时区旋钮，即可一键切换全球21个主要城市当地时间，时区同步走时，在90年代属于极具科技感的设计，甚至有记载，当年外事出访人员会携带这款机型。</section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202608/6f21c47e8724468283ce9c6416a0b671.jpg"></section>
<section>电路沿用同款索尼CXA系列集成芯片，收音性能与R97T接近，升级双闹钟、时钟夜光功能，机身体积稍宽大，模具精密、外壳用料厚实，市场认可度很高。</section>
<section>&nbsp;</section>
<section><strong>三、墙里开花墙外香：华谱的两大特殊之处</strong></section>
<section>&nbsp;</section>
<section><strong>1. 技术标准：先适配海外，再面向国内</strong></section>
<section>&nbsp;</section>
<section>华谱整机从PCB布线、屏蔽设计、元件选材、到外壳模具公差，全部按照欧洲CE民用电子标准生产。这就造成一个有趣现象：海外玩家先验证了机型的稳定性与接收性能，国内爱好者多年后接触同一标准生产的内销机器，才发现原来国产生产线完全可以做出对标进口机的产品。</section>
<section>&nbsp;</section>
<section><strong>2. 市场路径：海外口碑先行，国内后期出圈</strong></section>
<section>&nbsp;</section>
<section>80年代末至90年代初，国内收音机市场被国营老机、低价袖珍机占据，普通消费者很少接触短波远程接收，华谱这类高价多波段机，国内几乎无人知晓；而在欧洲，根德、西门子贴牌版本凭借优秀的弱台接收、稳定做工，成为当地发烧友常用便携机，口碑持续发酵。直到90年代中期，该品牌转向内销，这款&ldquo;本土生产、海外成名&rdquo;的机型才在国内收音机圈子逐渐走红，正是名符其实的&ldquo;墙里开花墙外香&rdquo;。</section>]]></description>
    <pubDate>Mon, 03 Aug 2026 06:52:00 +0800</pubDate>
    <dc:creator>广播发烧网</dc:creator>
    <guid>https://5bcl.com/jiaoliu/4714.html</guid>
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    <title>咆哮的美洲狮！七十年代日系BCL收音机中的硬核战将</title>
    <link>https://5bcl.com/jiaoliu/4712.html</link>
    <description><![CDATA[<!--?xml encoding="utf-8" ?-->
<section></section>
<section>上世纪七十年代，是日系便携短波接收机百花齐放的黄金岁月。索尼、松下、东芝轮番推出性能强悍的BCL远程接收机型。在一众名机之中，松下National Panasonic RF-2200 （美洲狮2200） 始终拥有一席之地。该机型1976年正式面世，诞生之初便对标索尼传奇机型ICF-5900，凭借扎实的二次变频电路、丰富可调功能、优秀的操作手感，成为一代BCL经典装备。</section>
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<section>论功能，它没有现代机型的同步检波、没有单边带SSB接收，不存在数字频率显示。但只要你亲手操作一次RF-2200巨大的调谐飞轮，转动各个阻尼顺滑的旋钮，亲自感受宽窄带宽切换、射频增益调节带来的接收变化，便能理解这款老机独有的魅力。</section>
<section></section>
<section><br><strong>一、名称历史溯源 &nbsp; &nbsp;咆哮的美洲狮。</strong><br>&nbsp;</section>
<section style="text-align: center; visibility: visible;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202607/681480b997dd064afbe28e174f6afb94.jpg"></section>
<section><br><br>1970年代日本迎来空前的BCL短波收听热潮。松下为高端便携短波接收机创立独立子系列：COUGAR（クーガー）美洲狮系列，对标索尼同期大名鼎鼎的Sky Sensor天空传感器系列，两大品牌正面竞争。<br><br></section>
<section>最早启用美洲狮命名的机型是1973年 RF-887Cougar，上市宣传口号：&ldquo;ほえろクーガー！（咆哮吧，美洲狮！）&rdquo;。<br><br></section>
<section>随后这条产品线不断扩充，Cougar 887、Cougar 888，直到1976年推出旗舰机型 Cougar 2200（RF-2200）。<br>&nbsp;<br>美洲狮动作敏捷、嗅觉敏锐、活动范围广阔，可以长途巡猎。松下借用这个意象，比喻这台接收机灵敏度高、捕捉微弱远程电台能力强悍，能够&ldquo;狩猎&rdquo;遍布全球的短波信号。在70年代厂商宣传逻辑里，猛兽命名非常流行，象征机器强劲、充满力量感，非常贴合男性无线电爱好者审美倾向。<br>​<br><br></section>
<section><strong>二、硬件规格：面向远程DX接收而生的八波段接收机</strong></section>
<section>&nbsp;</section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202607/8221833947ba6730c2e3550da0b644ee.jpg"></section>
<section>松下RF2200定位高端民用便携BCL机型，一共覆盖8个广播波段：调频FM、中波AM，外加6段细分短波。另有BFO拍频功能，可接收CW广播。</section>
<section>&nbsp;</section>
<section>短波频段被精细切分，覆盖3.9MHz～28MHz主流国际广播区间，完整包含25米、31米、41米等大众熟知的短波广播米波段，满足当时爱好者远程收听全球电台的需求。</section>
<section>&nbsp;</section>
<section>短波波段采用二次变频电路，能够大幅提升镜像抑制能力，提升收音机选择性，在拥挤的短波频段，更容易把目标电台从嘈杂信号中分离出来。</section>
<section></section>
<section>二次变频技术上世纪30年代就已经出现，但只用于大型台式专业通信接收机（军用、海事、电台机房设备）。70年代初期，日本BCL热潮兴起，索尼率先把二次变频小型化，1973年推出 ICF-5900，紧随其后松下推出Cougar美洲狮系列跟进。</section>
<section>&nbsp;</section>
<section></section>
<section>&nbsp;<strong>三、面板功能解析，满满的专业接收机操控设计&nbsp;</strong></section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202607/23deee9586f2b1366858327202b06129.jpg"></section>
<section>RF-2200的正面面板布局，规整清晰，颇有专业气质。&nbsp;</section>
<section><br>本文首发平台为公众号&ldquo;杂七杂八小科普&rdquo;，转发平台为头条号&ldquo;杂七杂八小科普&rdquo;，其余平台和账号均为搬运剽窃。</section>
<section></section>
<section>面板左上角多功能表头，兼顾调谐指示、电池检测与频标指示。下面三组开关功能各司其职：FM AFC自动频控稳定调频收听；三档WIDTH带宽切换，宽带追求音质、窄带压制邻频干扰；内置晶体频标发生器，依靠125kHz、500kHz标准频点，随时校准整机频率刻度。</section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202607/13d467ee72d8b233e2796e4d0577b54b.jpg"></section>
<section></section>
<section></section>
<section>面板左下角为三段式音频调节旋钮：低音BASS、中音TONE、高音TREBLE。同期绝大多数便携收音机，仅仅只有简单高低音两档切换。而RF2200搭载独立三段音调控制。搭配机身内部尺寸可观的扬声器，无论是舒缓人声，还是外语广播，都可以调整出合适的音色。这也是它外放音质优于很多同期竞品的重要原因。<br><br></section>
<section>&nbsp;</section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202607/97970e67634fb31d38e53eb9fb7107e3.jpg"></section>
<section>机器最核心的设计集中在面板中央的调谐机构。巨大的调谐飞轮搭配快慢速两档切换，大范围搜台用高速模式，捕捉微弱远程电台切换慢速微调。面板下层配备SW SPREAD DIAL短波扩展刻度，进入短波波段后启用精细标尺，大幅提升短波调谐分辨率，充分面向DX远程接收爱好者。<br>&nbsp;</section>
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<section><br><br>右侧控制面板分工清晰：上层旋钮用来切换六档细分短波；下方三档开关完成FM/短波/中波总波段选择。右下角为AM/SW RF GAIN射频增益开关，远程弱台可以开满增益提升灵敏度，本地强台降低增益，避免前端信号过载失真。这一功能在当时是专业接收机标志性配置。<br>&nbsp;</section>
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<section>机身顶部，原厂附赠有两侧卡扣安装的可拆卸斜挎肩带，兼顾便携性。同时外置可旋转中波磁棒天线，转动天线就能够规避环境电磁干扰，优化中波接收效果。得益于合理的磁棒天线设计与中频电路调校，该机中波接收能力十分优秀，在同等环境下，抗干扰、灵敏度表现在同时代机型里属于一流水准。</section>
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<section><strong>四、 内部结构</strong></section>
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<section>打开机器外壳，能直观感受到七十年代日系大厂的做工水准。电路板布局分区清晰，射频输入、中频电路、音频放大相互分离，尽可能减少电路之间互相干扰；线圈、中周元件排布规整，布线长短经过精心设计。厚重的金属底盘、大面积屏蔽罩，用来隔绝机内电路互相串扰，这些扎实的设计思路，也是这台机器拥有稳定接收性能的关键。</section>]]></description>
    <pubDate>Wed, 29 Jul 2026 06:41:00 +0800</pubDate>
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