the VARA HF modem is not responsible for PTT. Its VarAC. VarAC received a PTT command from the modem and turns the PTT on/off based on your rig control setup.
To be sure - you can just verify that you see un the Vara Log section the PTT ON/OFF comming from the VARA HF modem. you would need to switch to advanced UI mode to see that.
the VARA HF modem is not responsible for PTT. Its VarAC. VarAC received a PTT command from the modem and turns the PTT on/off based on your rig control setup.
To be sure - you can just verify that you see un the Vara Log section the PTT ON/OFF comming from the VARA HF modem. you would need to switch to advanced UI mode to see that.