The first real radio on the 50003 stream (an IC-7760) settles the two guesses
the experimental audio path shipped with. The payload starts at 0x18 — the
packet carries a big-endian payload length at 0x14 (0x500 on every packet) —
not at 0x16, which swallowed two header bytes into the PCM and laid a 50 Hz
click track under everything. And rxcodec 0x10 asks for TWO-channel LPCM,
which the mono playback path rendered as double-speed garble; 0x02 asks for
the one channel the monitor plays.
rouggy