Cable television at your QTH? Cable can have some leakage... 145mhz area.
73 de Mike, KO9I ----- Original Message ----- From: Christopher K. Greenhalgh To: Repeater-Builder@yahoogroups.com Sent: Monday, January 26, 2009 2:24 PM Subject: [Repeater-Builder] 2 meter noise help! While not a true repeater, I hoping the gurus here can help me. Station info can be seen here; http://www.n8wct.com/n8wct-4/ The noise is a subtle low-frequency "bacon crackling". It is apparent across the whole 2 meter band. Every piece of (my) equipment has been replaced, or substituted. We even bypassed the filter, turned everything off, and the noise was still present, even on battery power. SWR is fine...the station can be heard 90 miles away. Even though the noise is subtle, the "pops" seem to be on frequency with the packet tones, thus, the radio requires an S8 strong receive signal, before the TNC can decode it! We are pretty sure its environmental...perhaps one of the large roof fans, a/c unit, or crap from the large adjacent electrical room...whatever it is, we are guests on the building, and probably would get much sympathy/help from the owners. Here's where I need help... 1. Identifying the source. I have an o-scope, but frankly, don't know much about how to use it. Is there some sort of antenna analyzer that would help me with this? Any other comments or advice would be deeply appreciated. 2. Repair or eliminate source. Or 3. If I cant repair or eliminate the source, is there a way to filter it out? This is really a great location, and I'm very eager to remedy the problem, so if anybody has anything...anything at all, please share. Thanks everyone. 73, Chris. _________________________________ Chris Greenhalgh, N8WCT www.n8wct.com
