Forgot to mention one thing - you don't even need to visit the site if the repeater has an autopatch (or even a remote base that is on a different band) you can listen to the RX via the patch or remote and let the main channel TX time out. If the quieting level in the RX goes up exactly when the TX drops off that indicates a problem.
Mike WA6ILQ At 07:14 PM 7/26/04, you wrote: >I like the idea but I'd use a parked mobile instead. HT's are hand held >and can >be moved which will change the signal level, plus they pull 3/4 to 1amp from >the batteries and can suck them down, which also changes the signal level. >The use of a parked mobile - set to the lowest power level it can do - >eliminates >both factors from the equation. > >Mike WA6ILQ > >At 06:57 PM 7/26/04, you wrote: > > >Here's one simple test. Have someone with an HT get into a noisy location, > >then disable your repeater transmitter while listening on the local speaker. > >If all of a sudden the HT becomes full quieting, you've got a desense > >problem. > > > >Chuck > >WB2EDV > > > > > > > >----- Original Message ----- > >From: "w9mwq" <[EMAIL PROTECTED]> > >To: <[email protected]> > >Sent: Monday, July 26, 2004 8:01 PM > >Subject: [Repeater-Builder] Receiver Sensitivity Testing Through Duplexer > > > > > > > I need a little advise here. I want to test my repeater's > > > sensitivity through the duplexer's while the transmitter is keyed > > > up, into my Cushman Service Monitor. What is the best method of > > > doing this? Do I need an isolator of some sort, or will the service > > > monitor handle both the incoming power and the outgoing signal > > > generator? It's a Cushman 6030 by the way. The repeater is working > > > excellent for the most part. The problem that I am having is on > > > weak signals, the audio is being chopped out, almost like the PL > > > deck is shutting down. On the bench, the receiver is at about .25 > > > microvolts sensitivity at 12 DB Sinad. Audio out of the transmitter > > > is about 4KHz wide, and clean at 100 watts. Any suggestions. > > > Handhelds are able to get in from about 4 miles away, mobiles have > > > no troubles at 30 miles away. The antenna is only up at 60' right > > > now, fed with 120' of 7/8" Andrews hardline. But it seems the > > > handhelds are the one's having the problems, and their signal is not > > > really that bad. Help please. > > > > > > Mathew > > > > > > > > > > > > > > > > > > >Yahoo! Groups Links > > > > > > > > > > > > > > >Yahoo! Groups Links > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
