Randy, There could be 2 problems why you get desense. 1.overload by the other repeater tx, but more likely 2. his wide band tx noise, down maybe 85 db, is getting into your receiver...the wide band noise is actually on your rcvr freq.
Solution to 1 is maybe a cavity narrow filter on your receiver. Solution to 2 is a notch cavity on the other repeater TX at your receive freq. Does same as the duplexer on our repeater tx. I am assuming you can put a dummy load on each repeater and there is no desense...nothing interacting between the gear on the ground. 73, ron, n9ee/r >From: wb8art <[EMAIL PROTECTED]> >Date: 2008/03/06 Thu AM 07:57:54 CST >To: [email protected] >Subject: [Repeater-Builder] 440 de-sense > >Hi, I have a slight problem with a 444.6 output repeater and looking >for the best and low cost approach to fix. We have just moved to the >site and the owner has the 440 repeater. The ants are all at the same >height and hence we only have a small amount of horiz separation. We >can't change this as on cell tower as part of the owners deal for the >site. So what it is, is it. We link the the site on 446.7125 and >446.60, and his repeater at 10 watts, is DE-sensing our receivers >which are GE MVP's. Guess looking to the experts on best viable >solution. I have been able to try anything yet but have considered a >mobile duplexer as an option. > >Thanks Randy > > Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
