I’m having the same issue. Yaesu VX6 > digirig lite > android Samsung Galaxy S20 Ultra
I have it set to Audio (AFSK), and I can receive transmissions… but nothing at all transmits. No red light for PTT on digirig lite or radio. Ive tried just about everything.
I’m having the same problem. My problems with the Digirig Lite started on Windows where VARA FM refused to work no mater what settings I used. Changed multiple settings on both the radio and windows and nothing. So following the YouTube video I connected my HT to it and tried APRSDroid. Again nada. Checked and double checked the tablets settings and also tried two different HTs and nothing.