I have found that the FIBER OPTIC modems that Verizon is installing has many spurious signals in the two meter band. Trying to get Verizon to replace my FIBER OPTIC modem with on that does not cause interference to the two meter band.
Just my 2c David wa4ecm ----- Original Message ----- From: skipp025 To: [email protected] Sent: Saturday, November 10, 2007 11:39 AM Subject: [Repeater-Builder] Re: Possible interference on 146.160 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
