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张家贝:我也是817,上了cw滤波器效果非常好。您可能是天线没调好或者没找对频率 (2017-05-11 14:40)
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BA7CK:果断买FT891
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bg4nni:玩过很多机器的滤波器,从来没感觉用了滤波器会好,最后都不用了。
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haog131:我也是817,上了cw滤波器效果非常好,我是用的300HZ的,打开窄带滤波器,CW信号一下纯净好多 (2022-02-04 22:53)
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