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Re: [RFI] Snow and Power Lines

To: "'Missouri Guy'" <n0tt1@juno.com>, <Jimk8mr@aol.com>, <RFI@contesting.com>
Subject: Re: [RFI] Snow and Power Lines
From: "RFI Services' Mike Martin" <mike@rfiservices.com>
Reply-to: Mike@rfiservices.com
Date: Wed, 17 Feb 2010 15:26:59 -0500
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
Most, but not all, noise sources on during the early stages of rain are
found to be lightning arrestor. These sources don't usually last long,
sometimes weeks, and the fail.
In few cases on 6 meters and below corona has caused this issue. The corona
is a very rare issue and only occurs when very close to the receiving
antenna. There is other factors needed for the corona. I'm sorry I don't
have the time for a thorough explanation, but you don't want to push the
corona issue unless you are 100% positive. Actually that is true for any
power line noise.

On another note: That was a great story from K3LR. 

Mike Martin
RFI Services
6469 Old Solomons Island Rd
Tracys Landing, Md 20779

-----Original Message-----
From: rfi-bounces@contesting.com [mailto:rfi-bounces@contesting.com] On
Behalf Of Missouri Guy
Sent: Tuesday, February 16, 2010 9:48 PM
To: Jimk8mr@aol.com; RFI@contesting.com
Subject: Re: [RFI] Snow and Power Lines

 > Is this a natural, unavoidable outcome of snow, or does this sort of 
> noise  
> occur because of some preexisting problem (other than salt or other 
> dirt,  
> which would wash away in a rain), with the snow causing the problem 
> to 
> become  apparent?

At my QTH, when it rains the powerline noise goes completely
silent.  Snow does the same thing after it has just a little time
to melt.  

I have to ask...Are you *sure* the noise you hear isn't just 
precipitation static?

I would think that if it IS powerline noise when it rains, that
there is one or more insulators that are breaking down
when they get wet....something that should be addressed.
Charlie, N0TT
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