搜索 - 科创

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啊可能是我没表述清楚，我发现的这个信号是中心频率的频率值不断地在抖动，其实瀑布图上有所体现。AGC应该只会改变信号幅值的大小吧。我用这个SDR听了航空台之类的AM也没有出现说中心频率抖动的现象，应该不...

接收SSB信号，频率误差会带来明显的音调变化，通常要求准至50Hz，对于10MHz的接收频率来说，大约相当于5ppm。普通晶体需要能够一个微调电容来稍微改变频率，至少初始频率基本准确，用户忍受温飘和长...

从操作的角度补充一下，设备可以先缓一下，有电脑的话，cw 和ssb都有模拟环境，能上网就可以用。把听力先练出来，后面再考虑设备的事情。Uv台国产的便宜货先用着，拿到b照后，可以先买协谷的sdr入门电台...

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