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Re: [RFI] Interesting Noise

To: rfi@contesting.com
Subject: Re: [RFI] Interesting Noise
From: Alan NV8A <nv8a@charter.net>
Date: Thu, 10 Mar 2011 22:11:03 -0500
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
On 03/10/11 08:38 pm, Doug Rehman wrote:

> I had a radio listening on 144.200 USB last night. The band was absolutely
> quiet when all of the sudden a 59+20dB noise came on. Immediately after
> hearing it, I realized that a major rain downpour had commenced. Within a
> minute or so the noise began to weaken and was totally gone in a few
> minutes.
> We've been dry for several days before the rain. This is the first time I've
> heard this noise before.
> Anyone have any idea what specific power line conditions or equipment might
> have generated it?

Conjecture: crud had accumulated on the insulator(s) but caused no 
problem as long as it was dry. The rain at first rendered it conductive 
(causing the interference) but then washed the crud off: no more wet 
crud, no more interference.


Alan NV8A
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