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Author Topic: Appears to be switching p/s RFI on 40 meters  (Read 15058 times)
NK7Z
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Posts: 2303


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« Reply #15 on: December 05, 2016, 12:00:02 PM »

I would be interested in your thoughts on that device!  I have been playing with the thought of either getting one, or building one, and would love the input on how useful is turns out to be for you.
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Thanks,
Dave
Amateur Radio: RFI help, Reviews, Setup information, and more...
https://www.nk7z.net
KB7WOX
Member

Posts: 56




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« Reply #16 on: December 08, 2016, 07:59:09 AM »

Good news and bad news. The good news (perhaps) is that the switching p/s RFI disappeared just before Thanksgiving (and the CQ WW CW contest)! Of course, it has done this before and has come back.

The bad news...a new intermittent (quickly on and off) buzzing, wideband noise across 40 M. I almost thought it was some kind of CW signal because the on and off buzzing (arcing?) has that type of pattern.  Maybe it's a neighbor's Xmas lights and will go away. I've not tried to track it down yet.

Purchased a National RF HFDF and hope it will help.
NK7Z's "Whack-a-mole" analogy is appropriate...a constant battle.


Cheers.
That "Whack-a-mole" remark came from the FCC in its combat of pirate radio, so as to give the impression the Enforcement Bureau is "really" doing something.
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N8CBX
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Posts: 542




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« Reply #17 on: December 31, 2016, 11:10:50 AM »

My Maytag washer emits very strong RFI (30db-40db over S9) on 80M. I found it with a homebrewed 80M, hand held DF.
And I found the RFI, that the washer generates, follows down the service power line to the utility pole. I haven't tried any filtering yet.
It is satisfying to discover where those RFI sources are coming from.
Jan N8CBX
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