In any case, doesn't sound like there's any particular Elecraft filtering wizardry I can engage.
Given that they've repeatedly slipped K4 dates, now wondering if I should cancel my K4D. Thanks for the feedback, everyone. Scott AD6YT On Sun, Feb 2, 2020, 9:50 PM Tox <scott.sm...@gmail.com> wrote: > Yeah, all bands. Then suddenly clears, signals sprout all over the > waterfall and are promptly silenced once more. > > On Sun, Feb 2, 2020, 9:44 PM Tox <scott.sm...@gmail.com> wrote: > >> 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 <scott.sm...@gmail.com> 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 <donw...@embarqmail.com> 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: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
