Sorry, I have the same problem with my repeater on a 100 foot tower guyed with 3/16 cable. It seems when the temp drops below 60 F I get a squeal in the RX side of my repeater. I can shake the tower when its doing it and it will go away for a few minutes. We went up and grounded the antenna and bracket to the tower. I thought we were getting RX noise from a bad connection that would get worse when the temp dropped due to the metal shrinking. Still no luck fixing it. I'm not sure what to do now. 73, KD5UZA In a message dated 3/12/2009 3:39:30 P.M. Central Daylight Time, paul_n1...@myfairpoint.net writes:
Hi Randy, I remember working you on 2 meters. That is very interesting. I tried bonding all the joints. If anything it actually seemed to make things worse!? I have been seriously thinking about Phillystran. It's a big expense not knowing for sure where the problem lies, but the only way to find out may be to try it and see! Paul wb8art wrote: > Hello Paul, Worked you a few times many moons ago. I would > agree with Jeff with tapping and slightly causing movement with > the repeater up with a weak signal. I have before experiened both > an antenna (stationmaster) with internal broken joint which > caused severe noise and desense but also dependent on movement in > the structure. Also have seen with a 100ft. guyed 3/36 town like > yours having the same issue. I tried grounding bonding all > joints on guys to tower and between tower sections to no avail. > Also tried isolating the preforms from tower and bottom supports > with no change. I decided that the 3/16 stranded was the > generation source. We changed the guys to Phillystran and never > had another issue. **************Need a job? Find employment help in your area. (http://yellowpages.aol.com/search?query=employment_agencies&ncid=emlcntusyelp00000005)