I had a similar problem at my house and it was tearing up my packet digipeater. It turned out to be microspark interference. See this message:
http://www.mail-archive.com/repeater-builder@yahoogroups.com/msg50828.html It turned out to be a tie-wire that is used to hold the wire into the insulator on the high voltage line in front of my house. The tie wire was just long enough to resonate in the 2 meter VHF band, but very little noise was being created on the AM broadcast band. Do the test that I described in the above message and see if it is AC power line interference. If it is, you should ride around the general area of the tower and listen on your car AM radio. When you get very close to it, you should hear the interference on both the VHF and Am radio. If you have a handheld scanner that receives AM it will be easier to find the interference. 73, Joe, K1ike On 4/26/2010 10:23 AM, kc0mlt wrote: > Hello all, > > I am in the process of putting up a 2M repeater on what I would consider > a pretty vacant site. There is only one other machine (70cm Repeater) > currently out there. My concern is with an AC (60Hz) buzz that comes across > on the VHF band. It doesn't have a signal to it that will key uip a radio, > but when you receive an actuall signal you can here it. We have heard this on > both handhelds and mobiles. This site is unique as it is a duel tower with > old (unused)Microwave panels and drums on the bridge at the top of the two > towers. The microwave equipment is no longer hooked up. We have had the power > company totally unhook the power to the site and the buzz was still present. > The nearest high voltage lines are about 1.5 to 2 miles away. You can not > hear the buzz on any AM reciever. Does anybody have a clue as to what this > could be and what we could to do prevent it? We have some thoughts on the > grounding of the guy wire being a cause but we are unsure of that. Any ideas > would be greatly appreciated! > > Thanks > Wade > KC0MLT > > > > ------------------------------------ > > > > Yahoo! Groups Links > > > > >
