Tx500 digirig on an ft818

Dont burn me too hard. I’ve read the respective cat and store pages numerous times and i dont understand. Im trying to rule out a compatibilty issue. (Prev i believe i knew the answer but now not so sure).

Originally my digirig was purchased for my tx500 ive since built nice, short, shielded cables for my ft818. Audio and cat working but have a weird issue im trying to pin down, (could be rf?) No audio from pc to rig. I very breifly managed to tune the levels in windows and get alc right but now nothing. Just trying to rule out. I had a quick look inside and a past version of myself has bridged thr 3v pads, cant recall why.

Feeling a little fragile if im honest and rooting out the soundcard levels in windows10 while im not sure if other variable are correct is terribly inefficient. If i can rule out compatibility or something derpy im doing i can then tackle rf. Thoughts and comments greatly appreciated.

The 3.3V bridge is necessary for using Digirig with TX-500. The mod can stay in place for FT-818 if you don’t connect serial cables or ring 2 on the serial cable is unconnected.

In any case this should have no effect on anything to do with audio levels. You can confirm that the audio is leaving Digirig by plugging stereo headphones into the audio socket and monitoring the output on the right side as demonstrated here: