Change to duplex feedline (read hardline, not aluminum construction method), ground with 8 ft electrode and 6AWG wire to base of antenna leaving a area where the other stuff can be grounded using split bolts (burndy product). You may find even more static removed when you ground the station itself, if you must drive another electrode bond the 2 together using the split bolt method and some stranded 6AWG bare wire or green wire.
sledman11 wrote: > > Looking for idea's on tracking down an intermittent static and > desense problem I am have with a 2 meter repeater. The set up is as > follows - ge mastr II base, LMR 400 coax (about 50 ft) into a diamond > F23A antenna mounted on a chimney with 22' of black pipe mast. The > location is the local firehouse which has a antenna mounted on a > tower about 70' feet away from the repeater antenna. We also have a > 220 Mhz, 4 element beam mounted on the back pipe mast about 12' under > the repeater antenna. This is for echolink. Have turned off the 220 > Mhz link with no affect on the problem. Have not been able to > determine a pattern to the problem (ie cold, wet windy etc). When it > happens it can sometimes completely wipe out a signal that was full > quieting. Have checked the antenna and all is tight, dry and no > problems that I can see visually. Including the coil and capacitor > at the bottom of the antenna. Thought about running jumpers between > the antenna mount, mast, 2 meter antenna and the 220 Mhz antenna so > all are at ground potential. Do feel it is something outside that is > causing the problem and not the radio or duplexers. Can create > static on a weak signal coming into the repeater by banging on the > mast. All idea's welcome. > > Thanks, > > Don > WW2N -- 73...Clark Beckman N8PZD Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
