>> ... I've never seen/heard anyone talk about checking SWR / Resonance on V/UHF ...
In my firsthand experience, this topic is a case of, "Hey, it works extraordinarily well, WHY put it on a meter?"
You are experiencing the same phenomenon, I am sure (assuming the antenna is properly assembled, and the coax
and diplexer are fine). Using a "lesser" antenna, you can find a station/repeater that't just "on the edge" of being able to work.
But switch to the Arrow, and you can turn down the power output to successfully work it.
The numbers are out there as far as test measurements are concerned. ut it just WORKS!
Clint Bradford K6LCShttp://www.work-sat.com
909-241-7666 - cell