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FM Sub-Audible Tones

When listening to 2m FM on my 6700, repeater sub-audible tones are very audible (and annoying). Is there any way insert a high pass filter into the audio to block those tones. Cutting the lower frequencies on the Rx Equalizer helps, but doesn't completely eliminate the tones. When operating in SSB, I can set a high pass (as well as a low pass) filter. Why not in FM?


  • WX7Y
    WX7Y Member ✭✭✭
    edited June 2020
    I use the TNF along with the RX EQ
  • Watts - K4QJZ
    Watts - K4QJZ Member ✭✭
    edited April 2020
    The best way to solve it in the future is to add a decode function then do what normal encode/decode sections do and filter the specific tone frequency. Most transceivers bought today do that as a standard feature. Hopefully it will get added to the growing list of requested features .
  • David-N5PSM
    David-N5PSM Member ✭✭
    edited August 2019
    How do you use a TNF on FM?   I would like to see that!

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