yf 122s ssb circuit - CW /SSB 2.7K narrowband filter compatible with YF-122S module For YAESU FT-817/857/897

yf 122s ssb circuit - CW /SSB 2.7K narrowband filter compatible with YF-122S module  For YAESU FT-817/857/897

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yf 122s ssb circuit - CW /SSB 2.7K narrowband filter compatible with YF-122S module For YAESU FT-817/857/897