Hey John and every body, Make sure that there is a /u on the end of your RG-214 or RG-214/U big difference between RG-214 and RG-214/u Good Luck, 73 Russ, W3CH
----- Original Message ----- From: "JOHN MACKEY" <[EMAIL PROTECTED]> To: <Repeater-Builder@yahoogroups.com> Sent: Saturday, December 04, 2004 9:47 PM Subject: Re: [Repeater-Builder] Repeater 'noise' problem > > Make sure all the coax jumpers are OK. They should be good RG-214 and > DEFINATELY not 9913. If you find any 9913 jumpers replace them with Rg-214. > > ------ Original Message ------ > Received: Sat, 04 Dec 2004 04:36:49 PM CST > From: "Rick Stoneking" <[EMAIL PROTECTED]> > To: <Repeater-Builder@yahoogroups.com> > Subject: [Repeater-Builder] Repeater 'noise' problem > > > All, > > > > I am trying to resolve a problem on a local repeater where they are having > intermittent 'noise' problems. > > > > Background: > > This a commercial GE repeater that has been modified for 2m use. When the > noise is not present the repeater performance is outstanding with a wide > coverage area. > > The following have been replaced with new and had no effect: > > - tranmitter/receiver > > - antenna (super station master) > > - hardline from duplexer to antenna > > - repeater controller > > > > The noise may be related to weather (wet or cold causing an increase in the > problem) though it is not a everytime event. > > > > It was originaly believed that it was a grounding problem but grounding > improvements have had no lasting effect. > > > > At one point it was said that the guy wires were causing the problem so the > club recently put insulators in all 9 guy wires about 6 to 8 feet from the > anchor point - no help. > > > > The problem, which sounds like static or popping, occurs only during > transmitting incoming audio. In other words, all controller generated audio > is fine, no noise what so ever. > > > > I am wondering if we are looking at a problem in the duplexor. One because > it is the only peice of the system that has not been changed (although it was > checked out by a professional RF engineer using state of the art equipment > about a year or so ago - but he was just looking to tune it to the right > frequencies). Two, because the only time there is a problem is during > transmitting received audio. We are going to go and check all of the > interconnections in the duplexor, but I thought I would ask the group if they > had ever experienced anything similar, and ask for suggestions. > > > > Thanks and 73, > > Rick > > W2RDS > > > > > > > > > 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/