The M-100 supports a wide range of older models such as the YAESU HF series FTDX9000, FTDX5000, FTDX3000, FTDX1200, FT-991/A, FT-891 and FT-450, as well as the FT-2000, FT-950 and FT-847 series. Treble Boost Cowling Microphone Cable/Owner's Manual.
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