@K3can @hamradio@a.gup.pe Latency over just about any VOIP type system is going to be about a 1/4 second at worst if properly configured. Not an issue with FT8 clocks, and you could potentially fudge the clock a little to counteract some of that. PCM/WAV, ulaw, or opus are all extremely fast to encode/decode and should work fine. A little fidelity is lost on opus, being a lossy codec, but at a high quality setting, should be fine.