Reported on an 8x2: port A correctly on the 80 m vertical, then a few seconds
later both A and B shown on the same beam.
The display preferred the TX antenna, falling back to RX. On an 8x2 only ONE port
can hold the transmit antenna, so the switch reports the same txant on both — and
every keepalive poll redrew port A as whatever port B transmits through. The RX
antenna is the per-port selection, and the only thing Activate sets, so it is
what a port shows; TX stays the fallback for a port reporting no RX antenna.
A port change is now logged with the raw line — but only on CHANGE, since the
device pushes state every few seconds and logging each one would bury the rest.
Without any trace, "port A jumped to the wrong antenna" cannot be checked.
Two tests pin it: rx wins over a disagreeing tx, and a message about one port
never moves the other — which is the shape that was actually on screen.
rouggy