FTM-400 No TX Audio. Any help

Discussion in 'General Technical Questions and Answers' started by 2E0SOY, Sep 26, 2020.

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  1. 2E0SOY

    2E0SOY Ham Member QRZ Page

    I have a Yaesu FTM-400xdr/de

    radio keys up with full power, however no modulation at all. I’ve tested the mic and it’s fine, tried an alternative mic on the radio, same result no modulation. All other functions, receive etc. Are all fine.

    any hints or tips from the Yaesu experts out there?

  2. KA3TJI

    KA3TJI Ham Member QRZ Page

    Just do a factory reset and hope it clears whatever is blocking audio. Might have hit a function in the menu that you weren't aware of. If that fails call Yaesu tech support.
  3. KD4UPL

    KD4UPL Ham Member QRZ Page

    Mic gain too low?
  4. 2E0SOY

    2E0SOY Ham Member QRZ Page

    Contacted Yaesu UK - They asked me to send the radio back to them. They now have it and I'm awaiting their prognosis. Thanks for the responses.

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