And the RG-58 jumpers should be changed to RG-400 or RG-142 (not LMR400, that's totally a different beast).
Chuck WB2EDV ----- Original Message ----- From: "Chuck Kelsey" <wb2...@roadrunner.com> To: <Repeater-Builder@yahoogroups.com> Sent: Wednesday, June 17, 2009 8:46 PM Subject: Re: [Repeater-Builder] Need tips for repeater performance > Using LMR400 will cause you problems in duplex service - use Heliax > instead. > > Chuck > WB2EDV > > > > ----- Original Message ----- > From: Aisen Lopez > To: repeater-builder@yahoogroups.com > Sent: Wednesday, June 17, 2009 8:41 PM > Subject: [Repeater-Builder] Need tips for repeater performance > > > > > Hello everybody: > > I'm into increasing the performance of my repeater. I've already ordered > 50 > Ft. of LMR-400 to replace the cheap RG-8. Yet, I wonder if there is > something else I could do. > > The Duplexer is pre tuned to my freq. (458.0 repeater RX / 453.0 repeater > TX). The duplexer is connected to the radios (my repeater is built out of > two Motorola M120's) using RG-58 jumpers of about 24 inches long. Could > that be affecting performance? When I check the TX power thru the duplexer > I'm getting about 10W yet the TX radio is programmed for 30W. I know that > I'll loose some power with the duplexer, but seems to me that I'm loosing > too much. SWR won't go below 2.1 no matter how much I adjust the antenna > bays. > > So, what could be done? I imagine that swapping the RG-8 for the LMR-400 > will help but I still wonder if that would be enough. Any help will be > greatly appreciated. > > Aisen > > > > ------------------------------------ > > > > Yahoo! Groups Links > > >
