A K3 (and other Kenwood-dialect rigs) answers "?;" to an IF; status poll while
it is transmitting. ask() latched that as "IF unsupported" and ReadState
returned an error, so the Manager dropped the whole CAT link mid-transmit — the
log shows connected=false / "IF rejected" the instant JTDX sent TX;. That tore
down the shared rigctld CAT the digital-mode software keys through.
Two fixes: (1) track PTT (SetPTT) and skip the wire poll while it's held —
ReadState hands back the cached last state, capped at 30 s so a missed
SetPTT(false) can't freeze it; (2) never latch IF/ID as unsupported — those are
universal on Kenwood/Elecraft, so a "?;" to them is a transient busy (mid-TX),
not a missing command.
rouggy
761f554ac0