Hm. And as soon as I send that I check, and 15/30m has 15dB of odd surging over a 1-2Hz cycle. Maybe it really it taking everything out
On Sun, Feb 2, 2020, 9:40 PM Tox <[email protected]> wrote: > It is much like what I recall when the hydroponics shop was still in > business a couple blocks away. But in that case the source was never on > less than 15 min at a shot. > > Part of what is maddening about current is that duration is completely > random, seeing blips during ft8 turnarounds, followed by blocks of 30 min > solid hash, 5 min free, completely unpredictable. I can get ft8 cycles to > complete *just enough* to not rage quit and shut the radio off. > > And 15/30 seem less affected than 20/40, which is Confusing. Since the > whole band goes I wouldn't expect it to follow that sort of harmonic > behavior. > > > > What would a 20m spark gap transmitter look like on modern gear? > > On Sun, Feb 2, 2020, 9:29 PM Don Wilhelm <[email protected]> wrote: > >> Scott, >> >> It would appear as though you are receiving noise from somewhere. Your >> steps have eliminated your house, but your neighbors may be the source. >> >> I don't have an easy answer, but I don't think it is in your KX3. To >> test, does it occur if you connect a dummy load? If not, it is coming >> in on your antenna. >> >> Filters and NR and NB are not likely to tackle it adequately. You will >> have to locate the source and send a notice to the FCC for action. You >> can use the KX3 portable with a short antenna to try to localize the >> source. >> >> Sounds like the interference from "grow lights" that have been reported >> in the past. Are any of your neighbors starting gardening plants or >> growing pot under UV Grow Lights? >> >> 73, >> Don W3FPR >> >> On 2/2/2020 5:13 PM, Tox wrote: >> > Hoping someone has a suggestion for how I can work around some local >> QRM. >> > >> > I have a kx3 with filters installed >> > I have wsjtx running. >> > I've recently added a px3 to see if it would help provide insight. >> > >> > I find intermittent broadband noise that desenses my receiver on >> multiple >> > bands. 1) It appears to either be On or Off, no visible fading. >> > (Transitions are <<1 second). Sometimes a little flickering but usually >> > extends for minutes to hours. >> > 2) When on, signals in waterfall completely disappear or are reduced to >> > just a couple nearby (loud) stations >> > 3) when on, it wipes out at least one whole band (usually 20m, sometimes >> > 40m as well). >> > 4) when on, the full 200khz slice in px3 goes green snow >> > 5) still happens if I throw breaker in my subpanel and am running off of >> > batteries >> > 6) with 30 min of fiddling, haven't been able to see it in a kiwisdr >> node >> > less than a mile away >> > 7) pskreporter still shows me to be getting out (to the extent I can) >> > >> > Broadband, no visible peaks, so not sure I could triangulate it by >> > wardriving with a Kerberos. >> > >> > Any suggestions? >> > >> > ______________________________________________________________ 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 Message delivered to [email protected]
