Tom, Assuming the shop set the transmit side is/was set right , the swr should be flat if into a 50ohm load. It is just that. I guess what I am thinking here ( excuse me if this flies in the face of what may be the correct and accepted method ) if the transmitter sees no standing wave, ( after the shop adjusted it as such, even though we had done the same thing )and if the recv side can be tweaked in such a way as we did a few nights ago, (while running nearly 100 watts to the duplexer by the way) isn't the real success, that the recv hears well enough to not notice the amp, etc.??..I mean if it wasn't broke did I make a mistake ( let's be honest) in trying to fix it, being greedy, striving for absolutely no desense, at the Motorola shop? -
From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Tom Sent: Wednesday, July 30, 2008 12:34 AM To: [email protected] Subject: [Repeater-Builder] Re: Curious Situation Assuming that your duplexer is a BP/BR type, it's true, setting the pass pretty close is not too difficult using an incoming signal. How did you set the reject side? Not that it can't be done (at least, close) but I'm sure your investment in time is several times that that the shop spent setting it (hopefully) correctly. When I first started messing with two way, I obviously didn't have much equipment to work with. I usually was able to make things work but when I got into the business, I quickly found that I didn't have time to mess with things long enough to make them work right. All of a sudden the test equipment became a real bargain and I KNEW that what I turned out was right. Tom -- In [email protected] <mailto:Repeater-Builder%40yahoogroups.com> , "Michael Ryan" <[EMAIL PROTECTED]> wrote: > > Rber's, I posted a note very early this week about my looking for a > someplace to get a 220 duplexer tuned in the TAMPA area. Having not much > luck I contacted a local MOTOROLA shop and paid $95 for the service. The > receipt returned with the cans indicates that the specifications published > by WACOM are very close. Having tuned these merely to incoming signals > before, peaking them while the repeater is still in a testing mode, seemed > to return decent results but the tune-up was thought to be a better idea. > Not so.. Today's tune-up hardly was worth the wait or the price based on > the results. While a 5 watt HT 10 miles away could work the repeater, now > 25 watts from a roof top antenna is now just about full quieting. Fifteen > watts does not make the repeater through the same roof top ground plane. > Does logic dictate that we go back to seat of the pants tuning and cast fate > to the wind? - Mike > __________ NOD32 3301 (20080727) Information __________ This message was checked by NOD32 antivirus system. http://www.eset.com
