FDX mode on 6500 issue when using digital modes

  • 1
  • Problem
  • Updated 4 years ago
  • Acknowledged
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.
Photo of Wim


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Posted 4 years ago

  • 1
Photo of Tim - W4TME

Tim - W4TME, Customer Experience Manager

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Official Response
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.
Photo of Steve - N5AC

Steve - N5AC, VP Engineering / CTO

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What are your transmit and receive antennas set to?
Photo of Wim


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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: