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bd8te:没必要,灵敏度和对讲机差不了多少,到是安个带通还差不多 (2012-06-08 10:30)
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bh4btz:[图片]ExtIO窗口把Gain/Attenuation开到头试试 (2012-06-08 15:27)
zly:前边应该再加个低噪声放大器。 (2012-06-08 10:23)