The follow logic skips out-of-range frequencies only when it knows BOTH edges
of the antenna's range. The Ultrabeam path took those edges from the
controller's status frame, but an RCU-01 behind an RS232-to-Ethernet bridge
answers with the short frame that omits FreqMax → the guard saw FreqMax==0 and
disabled itself → OpsLog forwarded every rig frequency, so 80 m (un-tunable)
reached the controller, which clamped the elements down to its lowest band
(~30 m).
ubAdapter now carries the operator-configured FreqMin/FreqMax from Settings →
Antenna (like steppirAdapter already did) and uses them as a hard floor/ceiling,
falling back to the controller-reported bound only when one is left unset. This
guarantees both bounds are present so the guard actually engages. The Tunable
range editor in the Antenna panel, previously SteppIR-only, is now shown for the
Ultrabeam too, with a generic bilingual hint.
rouggy
df56391eb8