Hi Ken, ATV activity... both from Amateur Operations and of course the import Wireless Video TV Extenders. Dont' forget the wonderful RF-ID tags. We're starting to get bombed by spread spectrum devices that are very hard to find/locate.
In the UHF Band we have the now Famous Pave Paws System... and just to join in the fun we also have the Eplers System. A Repeater Site within a short distance of two large Air Force Bases is a very rough go... s. > Ken Arck <[EMAIL PROTECTED]> wrote: > > I DESPISE the proliferation of all these unlicensed wireless devices > cropping up these days (I saw the downward spiral in wireless > "professionalism" starting when the FCC started eliminating 1st, 2nd > and 3rd Class RadioTelephone licenses and replacing them with the - > IMHO - useless General RadioTelephone ticket). But I digress... > > After many years of operation with no problems, about 2 weeks ago we > started experiencing an intermittent "hash" type interference on my > 434.xxx link receiver at one of my sites. It didn't appear on any > other receiver up there - not the 146.320 nor the 446.900 one. When > it occurs, it sounds a lot like horizontal sync buzz and usually > lasts a few hours or so. Of course the link is toned so the buzz is a > problem only as it relates to "capturing" a valid link signal being received. > > I went up to the site and luckily it was happening while I was there. > According to my handheld, it was fairly weak and was wide - from > about 200 kHz below my receive link channel to above it by almost 500 > kHz. This seems a bit narrow to be a video signal but I noticed > towards the high end of the range, the buzz fades only to be replaced > by a "quiet" carrier. Strange.... > > I plan on taking my SA up there next week to see if I can better > identify the offending signal but I suspect it's one of those low > power, Part 15 434 mHz POS.... > > Ken
