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?
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