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作者:尹金光 日期:2003-10-07 人气:1655 添加:5BCL.com 
      以下是我昨天用1102与747在短波收听时的对比情况(从上午8点50分开始,用手动调谐从11960khz开始往上搜索):
接收频率             1102收听情况                     747收听情况
11960                           可听、有杂音                    可听、杂音稍大
11975                           可听、有杂音                    可听、杂音稍大
12060                           可听、有杂音                    可听、杂音稍大
12750                                收不到                        可听、有杂音 
12920                                收不到                        可听、有杂音
13615                        电台声可辨、音小                      杂音
13650                                  清晰                           清晰
13680                           可听、杂音大                      可听、杂音大
13720                           可听、杂音大                    杂音大、不稳定
13820                           可听、有杂音                      可听、有杂音
14250                                收不到                         可听、有杂音
14295                                收不到                         可听、有杂音
14320                                收不到                         可听、杂音大
14380                                收不到                         可听、有杂音
14420                                收不到                         可听、有杂音
14435                                收不到                         可听、有杂音
14460                                收不到                         可听、有杂音
14470                                收不到                      电台声可辨、杂音大  
14480                                收不到                    电台声可辨、杂音大
14495                                收不到                        可听、有杂音
14535                           可听、有杂音                      可听、有杂音
14580                           可听、有杂音                      可听、有杂音
14630                           可听、有杂音                      可听、有杂音
14925                           可听、有杂音                 可听、杂音大、不稳定
15060                           可听、有杂音                      可听、有杂音
15135                           可听、杂音大                        杂音更大
15150                                  清晰                             清晰
15165                           可听、杂音大                    不稳定、偶串台
15195                                  清晰                             清晰
15210                           可听、杂音大                  杂音更大、偶串台
15225                           可听、杂音大                     可听、杂音大
15240                                收不到                        可听、杂音大
15280                                  清晰                           略有杂音
15310                           可听、杂音大                     不稳定、偶串台
15325                                较清晰                          轻微串台 
15345                                  清晰                             清晰 
15360                                  清晰                             清晰
15380                                  清晰                             清晰
15390                                 较清晰                           较清晰
15455                            可听,不稳定                        轻微串台
15465                          较清晰但有叫声                  较清晰但有叫声    
15520                                 较清晰                           较清晰
15530                                   清晰                            清晰
15540                            可听,杂音大                    杂音大,轻微串台
15555                          杂音大,不稳定                    杂音大,不稳定
15575                          杂音大,不稳定                     杂音更大,不稳定 
15610                                   清晰                             清晰
15695                                 杂音大                       杂音大,不稳定
15750                                 杂音大                       杂音大,不稳定
16665                                 收不到                        可听,杂音大
16835                                 收不到                        可听,杂音大
16865                                 收不到                        可听,杂音大
16995                                 收不到                      勉强能听,杂音大
17510                            可听,有杂音                   杂音稍大,不稳定
17550                            可听,杂音大                    杂音大,不稳定
17565                            可听,有杂音                        有叫声
17615                            可听,杂音大                      可听,杂音大
17625                            可听,杂音大                     可听,杂音稍大
17635                       电台声可辨,杂音大                      相近
17660                                   同上                            相近
17670                             可听,杂音大                     杂音大,不稳定
17680                             可听,杂音大                         相近
17690                       电台声可辨,杂音大                       相近
17710                       可听,杂音大,串台                       相近
17740                                 较清晰                           较清晰
17760                                   清晰                             清晰
     至此,已是11点了,由于有别的事,对比收听暂时结束。不过通过以上比较已能基本说明问题。出现以上结果是我所没想到的(也许会让许多德劲迷失望,甚至招来指责),也使我感到很迷惑:凡1102能收到的电台,其收听质量基本上都优于747(这可能要得益于1102的中频窄带功能,当开启宽带时噪音明显增大,与747难分伯仲,但绝对不会输给747),可为什么有许多台747能正常收听,而1102却根本收不到呢?难道都是一些本不该收到的镜像频率吗?本人不得而知。我曾经用747与日升9705的二次变频机也做过类似的比较,也出现过类似的结果(具体情况没有记载),我就认为9705的灵敏度不及747,且9705还有严重的频漂,故比后就将其塞进了抽屉。
      当然,1102的功能是非常强大的,747根本就没法比,不是一个档次。
      另外,网上的朋友都说用耳机听小音量时不会有嗒嗒声,可我的仍然有,不知何故? 
       以上只是我用单一机器的对比 ,并不代表整个品牌 ,希望大家多比较。
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