Hi, Noise spaced 61kHz apart to me means it's from an Ethernet LAN. Look at these files:
http://ab2tc.com/ethernoise.png http://ab2tc.com/ethernoise.mp3 There is one at the center and one just above the frequency of the cross-hair cursor about 61kHz higher. The mp3 file is a recording from the K3 in USB mode tuned to the center frequency. They are not all from my own LAN but mostly from my neighbors. I used to have much worse interference from my LAN but a combination of ferrites and largely switching to wireless, my house is now almost clean of this type of noise. Yes, the panadapter is an eye opener for sure. AB2TC - Knut W2RMS wrote > Hello everyone! > I'm not sure if this is the correct forum for this sort of a question but > i figured i'd give it a shot. > I've been going out of my mind with this strange signal pattern i've been > seeing on my new panadapter connected to my new K3. > I first saw it on 20 meters. It seems to be the same signal pattern, > spaced evenly, at 61 kHz intervals. > Something tells me that it could very well be outside of my shack. I've > got the street power lines 15 feet in front of my house, with a big > transformer on top of a pole. > I just took a video of the whole thing and you can also hear the sound of > it, especially while i tune it up and down. > Here's a link to the video file in my DropBox: > https://dl.dropboxusercontent.com/u/111549/rfi/strange_rfi.wmv > Sorry for the format. This screen capture program only does Windows Media > Video. > > I've gone to a point where i've disconnected everything in the shack. > Literally. And i could still hear it. > My Yaesu 857D also hears it, with the same antenna hooked up to it, so > that tells me its not my K3 or the panadapter (for that matter). > I also tried hooking up another antenna (i have a home made fan dipole) > and i can still hear it. So its not the antenna (right?). > > I'm very open to any suggestions as to what to do? How to narrow it down? > > Thanks a bunch in advance! > > Slava, W2RMS > > P.S. I almost wish i didn't have the panadapter, so i wouldn't even know > its there... :-( > ______________________________________________________________ > <snip> -- View this message in context: http://elecraft.365791.n2.nabble.com/K7YTM-Elecraft-K3-Panadapter-has-been-sold-tp7586901p7586935.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
