p.s. "This is an extremely rare six-meter duplexer. It was originally set-up by K1RJZ but some pesky repeater receiver desense symptoms remained. Rick's work was double-checked by W1BRI and was already found to exceed factory specs at 53.77 MHz. The culprit was that most testing of the repeater and duplexer was performed at a safe 20-watts. However, the 110-Watt GE PA did not like to operate at 20-watts and thus created spurs."
This is a well known problem with MASTR II PA's. I wonder if it's mentioned in any of the RB articles about M2's though... Mike? I couldn't find a reference to it. It's certainly been talked about here on the list for years and years... Nate WY0X
