Remember that turning off the power to a house does NOT eliminate UPS
noise problems. They keep on going without AC power causing the same
noise in most cases. So if you or your neighbor has a UPS you have not
eliminated that yet.
73, de ed -K0iL
-----Original Message-----
From: rfi-bounces@contesting.com [mailto:rfi-bounces@contesting.com] On
Behalf Of Ford Peterson
Bill wrote:
> I have eliminated my house as the culprit by shutting down the main
breaker
> and operating the radio off battery power. I have also asked my
neighbor to do the
> same thing which provided no clue either.
I had a switching supply on my LAN router that was giving me fits. So
I'd smack it on the desk top (pretty hard I might add) a few times and
the noise would go away (or at least detune it for a while ; ). Sure as
heck it would return at the most inopportune moment, so I'd smack it up
side the head a few more times. Replacing it with a linear supply seems
to have solved the problem forever. But it occurs to me, do you have
some device hooked to a UPS? Or the UPS itself may be a problem. With
the interference so loud, it has to be close by.
Ford-N0FP
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