PTT stopped working on Xiegu G90
Windows 10 Professional
VarAC version 8.4.4 and VARA HF v4.8.4
Using a Xiegu G90 with purchased CAT cable and DE19 USB interface.
Worked like a charm till yesterday but now PTT refuses to work.

CATfrequency control works perfectly.
CAT PTT works fine when I use the PTT ON - PTT OFF buttons in the Settings;
But the system does not trigger the transmit when I actually try to send a beacon or a CQ.

No problem with transmit with JTDX. Tried to overwrite settings in CAT device and re-install without any luck

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Thank you. Had the same problem with a Yaesu FT857d. PTT worked on JS8CALL but no TX on VarAC. Did the de-installing steps you mentioned here. I added a new folder location before downloading and installing again. Everything worked with the new install. Just a reminder to save the VARA files in another location in case of license issues. Using Yaesu FT 857 CAT files.
Doug
KB8MRC