I have to agree. It's interesting to see how what I formerly thought was 'just QRN' is sometimes a localized (in frequency) burst of RF. There are all kinds of phenomena that I had no idea existed which have become visible. It's also helpful to identify the stations with key clicks -- maybe I should apply for an OO appointment so I can send notices to these guys! The P3 has added so much to my enjoyment, not to mention my ability to spot and break through pileups. I recently obtained a 23" monitor that I intend to use for the P3 display as soon as the VGA output becomes available.
On 12/5/2011 8:49 AM, [email protected] wrote: > One of the interesting things about having a panadaptor is being able to > "see" rather than just "hear" what's going on in a small spectral region. > I see all kinds of things racing across the screen, noise-floor bumps, > etc. But, now that I can "see," I'd never willingly give it up. I can find > holes in wall-to-wall contest-related signals to plop down and run Qs, I > can see activity level in a 50 KHz segment of a band and move from signal > to signal instead of slowly tuning through the dead air from one to > another. I hope I never get jaded by it :-). > > Rob K6RB > > >> On 12/4/2011 1:08 PM, Fred Jensen wrote: >>> A group of very narrow noise pulses, not terribly strong, run >>> through the display at maybe 5 or so KHz/sec, usually from high to low >>> frequency. I might have heard them once or twice, generally there's no >>> audio indication. I disconnect my antennas when I'm not using the radio >>> but leaving it on, and I've never seen them then. >> Signals like this are quite common here in northern California. I don't >> know their source, don't know if they are intentionally "signals" .or >> unintentionally radiated noise. I find that I can often hear this stuff >> in my headphones. >> >>> 2. A more broadband, bump in the reference level runs across the >>> screen, maybe 20-25 KHz/sec, again usually down in frequency but not >>> always. It's definitely some sort of broadbandish signal coming in on >>> the antenna. I've never heard anything as it goes by. I'm about 25 mi >>> from Beale AFB with the PAVE PAWS radar and numerous other electronic >>> systems the USAF never talks about. I'm a bit suspicious, but it's >>> certainly not a problem. >> This sounds like typical trash from electronics equipment and their >> switching power supplies. Can be anything from battery chargers to 12V >> switching PSUs for low voltage lighting to computers to various >> microprocessor-based equipment of all sorts. The fact that stuff like >> this is not audible is largely due to AGC smoothing out the increased >> noise level when we tune across it. >> >> 73, Jim K9YC >> >> >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[email protected] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html -- Vic, K2VCO Fresno CA http://www.qsl.net/k2vco/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
