Eric and others, I have re-tuned the cavity to pass the TX frequency. However, it has about 1.0 dB insertion loss at the TX frequency of 448.375. It had about 0.6 dB loss at 443.375. This was of little concern on the RX side. However, on the TX side a 1 dB loss is 18 watts for a PA putting out 90 watts. I don't mind losing this power from going to the duplexer, but is there reason to expect the cavity to fail due to heat or whatever? And if so, how could I protect the repeater and PA from being damaged?
Thanks for your sage advice. John
