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No rf out with WSJT-X and SmartSDR 1.5

Jim WA9ABB Member
edited February 2019 in FLEX-6000 Signature Series
WSJT-X receives normally.  On WSJT-X transmit or Tune DAX TX Gain is normal.  Level on the SmartSDR Screen is also normal, but there is no rf output.  PTT functions normally with SmartSDR CAT.

Multiple re-downloads and re-installation of ver 1.5 with hard reboots of Flex 6700 and restarts of PC after uninstalling ver 1.5 have not corrected problem.  I attempted to reinstall ver 1.4.16, but it no longer recognizes the Flex 6700 and the radio screen on the SmartSDR screen is blank.  On the initial installation of ver 1.5, the firmware update on the Flex 6700 appeared to be normal.

My PC has 8 core AMD cpu, 32 gig memory, 256 gig SSD, Windows 7 professional.
WSJT-X was working fine both receive and transmit with ver 1.4.16 prior to installation of ver 1.5.


  • George KF2T
    George KF2T Member ✭✭✭
    edited February 2019
    Double check the DAX button is lit on the TX panel, and that the DAX control panel button to enable that channel is also lit. Also confirm that you don't have any ghost devices in Windows Device Manager (show hidden devices). Running WSJT-X smoothly here with my 6500. 
  • Mike va3mw
    Mike va3mw Member ✭✭
    edited June 2016
    I have been bitten by that as well.  Double check.
  • Bill W2PKY
    Bill W2PKY Member ✭✭
    edited March 2017
    I have a bad habit of forgetting to click on the "TX" ICON for the correct slice.
  • Al K0VM
    Al K0VM Retired Member ✭✭✭
    edited November 2017
    One other thing to check... Is the TX bandwidth wide enough to include the JT tone frequencies ?
    AL, K0VM
  • Jim WA9ABB
    Jim WA9ABB Member
    edited September 2015
    Dear Al,

    Thanks so much for the tip.  The problem is resolved after  increasing the High Cut frequency to allow for JT9 transmission.

    Also, many thanks to the other Flexers who offered comments and suggestions.

    Sometimes, such an overlooked small detail can be so confounding and frustrating.
    Now I can try out the other improvements offered by version 1.5

    Jim   WA9ABB
  • Bob N7ZO
    Bob N7ZO Member ✭✭
    edited February 2017
    Jim.  You are not alone.  I've also had this happen with JT9 (which commonly utilizes the higher audio frequencies).  Setting a wide JT transmit profile and remembering to recall it helps.

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