On Wed, 20 May 2009, atms169 wrote: > A 4 Can Telewave Duplexer A Chip Angle Band Pass Filter on receive and > a Chip Angle 18db pre-amp. > > Everything works just fine running the repeater barefoot at 20 watts. > My problem is when I add the TE Systems amp (Around 100 watts out when > hooked up), I lose the sensitivity on the receive. Our portables > basically get the bad end of it. > > How do I go about fixing this issue so I can have the best of both > worlds? I good receive and transmit?
Throw out the preamp. If you still experience desense, re-engineer the duplexing system for higher values of seperation (in dB). The last step _might_ be to go to a tube final amplifier, but it should be bulletproof at 100W solid state first. -- Kris Kirby, KE4AHR Disinformation Analyst
