I'm posting this question mainly for educational purposes.
The current installation is an XPR 8400 UHF repeater operating on the ham bands with a Motorola T1500 duplexer and the antenna is just over 100 feet above ground.
Receive performance is fairly acceptable with areas we feel could do better.
We have available to us an MTR3000 repeater without preselector with a Celwave 6 cavity duplexer to replace the XPR8400.
We also have an extra filter cavity we can tune to the receive freqeuncy for added isolation on the repeater input. We are thinking of adding an Advanced Receiver Research receive only preamp to help with receive.
The main question is: Would moving from the T1500 4 cavity duplexer to the Celwave 6 cavity duplexer plus one additional cavity filter provide enough isolation for the preamp?
The current installation is an XPR 8400 UHF repeater operating on the ham bands with a Motorola T1500 duplexer and the antenna is just over 100 feet above ground.
Receive performance is fairly acceptable with areas we feel could do better.
We have available to us an MTR3000 repeater without preselector with a Celwave 6 cavity duplexer to replace the XPR8400.
We also have an extra filter cavity we can tune to the receive freqeuncy for added isolation on the repeater input. We are thinking of adding an Advanced Receiver Research receive only preamp to help with receive.
The main question is: Would moving from the T1500 4 cavity duplexer to the Celwave 6 cavity duplexer plus one additional cavity filter provide enough isolation for the preamp?