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How do I resolve what appears to be a disconnect between SmartSDR and my 6400M?

I wonder if anyone else has run into the following issue, and if so, how was it resolved? Everything of the Dax panel shows that a signal is being transmitted to the radio; the SDR panel does not indicate that an RF transmission is being sent out and there is no SWR reading; meanwhile, the Flex (6400M) radio indicates that it is transmitting. It appears to me that there is a disconnect between SmartSDR DAX and the radio. Up until this issue arose everything was working perfectly and in all other respects the radio operates perfectly. I have spent a great deal of time trying to resolve this issue to no avail.


  • Al K0VM
    Al K0VM Member ✭✭✭


    Assuming that the DAX GUI shows TX signals in its bar graph, does the "level" indicator in SSDR or 6400M screen show TX signal ? Is DAX enabled in SSDR ? If so, Is the signal you're trying to send with in the frequency limits of the TX hi/low cuts ?

    AL, K0VM''

  • Joe
    Joe Member
    Al, the answers to each your questions are yes. The mode I am attempting to use is FT8, which up until a week ago had been working perfectly for the past year.

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