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FDX mode on 6500 issue when using digital modes

WimWim Member ✭✭
I was trying out the FDX mode on my 6500, while transmitting JT65 on 40m 
I was trying to receive on 20m at the same time.

The FDX works when I key the transmitter on 40m using the foot switch, I can continue
to receive on 20m during the transmission. However when WSJT-X keys the transmitter
via the CAT command, the receive on 20m is muted.

The WSJT-X is using the CAT method for PTT I am not using a separate COM port just for PTT.

Using latest smart SDR software here, anyone else seeing this or do I have something misconfigured.

Open for Comments · Last Updated


  • Tim - W4TMETim - W4TME Administrator, FlexRadio Employee admin
    edited March 2017
    I do not believe the radio is misconfigured.  I have entered this problem report into our bug tracker as defect #3153 for additional investigation. Thank you for the defect report.
  • Steve-N5ACSteve-N5AC Community Manager admin
    edited February 2017
    What are your transmit and receive antennas set to?
  • WimWim Member ✭✭
    edited February 2017
    My transmit antenna is ANT 1 and the receive antenna is RXA.

    This morning trying this again, I didn't see the failure initially but then playing with it some more
    I saw the issue again, this time when pressing the foot switch on 20m slice (bottom one) the audio
    would get muted but not when tuning from the WSJT-X on 40m slice ...

    See screen shot of my slice setup where I see it now:


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