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Peak TX Audio Level - Metering/Documentation

Tony Taddeo
Tony Taddeo Member
edited March 2020 in SmartSDR for Windows
I find that I can only properly drive the radio if I have the peak level indicator in the red at 0 db, with the average TX audio level indicator peaking at around 75%.  Using a peak audio level of just below 0 db on peaks, as per the documentation (below), is a little too low for full audio and to drive the radio correctly.  

I use an external voice processor, but when using the radios audio processing feature you need to have the same setting as above to get some compression to kick in.

How much headroom before clipping at 0 db peak audio level ? 

When setting up your microphone audio for optimal modulation, adjust the input gain so that the peak
level indicator is peaking just BELOW the 0 dB on voice peaks. It is very important that your peak level
indicator never exceed 0 dB and turn red at any time.


  • Steve-N5AC
    Steve-N5AC Community Manager admin
    edited February 2017
    2.5dB headroom
  • Tony Taddeo
    Tony Taddeo Member
    edited March 2020
    Thanks Steve.  I must like taking it to the edge :) 

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