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Anyone recognize this EMI?

I am getting this EMI on several bands 40-17M with what seems the strongest at 20m. I have put my Flex 6700 on battery with PC on the UPS and shut down power to the whole house. It's still there! I'm hoping someone might recognize this signal. I think it's a noisy UPS in the neighborhood but haven't tried tracking it down.
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Answers
In my case it was around 5kHz. and came from the high power inverter that drives the compressor motor. Trane was very good applying effort to this problem adding filters to the 240 Volt input but in the end they didn't know much about RFI and were of no help. They ultimately offered to exchange the unit with a lesser, single speed unit without an inverter.
As a last ditch effort I had the dealer follow the principals in the article on the subject in the August 2016 QST. We installed as many snap on ferrites as would fit on every wire in the unit. It worked and I'm back to normal for the second time in two years. The first time it was grow lights down the street.
rid of a lot of rf pollutants in my flat and in the vicinity. I installed all of the
switchmode chargers in my hobby room on a switchable power **** and
with a lot of ferrite cores was able to get a much improved spectrum.
Meaning you can now see all the RF "grunge" that was only noticeable audibly as clicks, chirps, tones and changes in the noise level.
Is it constant, or constant for several minutes?
Or is it a regular pattern every 10-30 seconds?
I have a pattern similar from a neighbor's Wash machine (I think) that sends strong spikes, followed by about 25 seconds of wideband noise, then a few seconds of silence, then repeats with a group of strong spikes, then the wideband noise, and over again.... from 80 all the way to 6 meters...and getting worse....
Longer patterns of several minutes might be a variable speed blower on an HVAC unit or a pool heater....
Ken - NM9P