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Re: [RFI] RFI Digest, Vol 115, Issue 23.....identification or rfi

To: Eddie Edwards <eddieedwards@tconl.com>
Subject: Re: [RFI] RFI Digest, Vol 115, Issue 23.....identification or rfi
From: Dave Cole <dave@nk7z.net>
Date: Sat, 25 Aug 2012 19:15:45 -0700
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>

Thanks for the information here...  I expect to be pealing this onion
for the next few months...  The one saving grace in this is, when the
Vault is noisy, I am noisy, when the vault is quiet, I have about an S3
noise level...  I might get lucky and have everything coming from the
single source...  Then again...  Sigh...
http://www.nk7z.net for equipment reviews, propagation, and more...
For JT65 Discussions:

On Sat, 2012-08-25 at 10:53 -0500, Eddie Edwards wrote:
> Dave, 
> The fact that you have two different levels of noise could possibly mean you
> have two different noise sources, not one.  When the level of noise dropped
> from source number 1, only then could you begin to hear the weaker noise
> source number 2.  We've seen this happen quite often.  Also, if you didn't
> taken an o'scope reading from your ham shack and find it matched the weaker
> noise, then it may not be the source you are hearing.  Without remembering
> your details around your station, I'm assuming you probably have several
> local noise sources that you do not even hear on the radio.
> If the stronger noise returns after the repairs are completed, then you'll
> still need to locate that noise source.  If not, then whatever work brought
> the lineman out on Friday may have already eliminated the stronger noise.
> Hopefully it won't return.  
> I'd be very interested in finding out what brand/model of device the
> lineman/tech was using if you could find out and share with us on the list.
> Thanks!
> 73, de ed -K0iL
> -----Original Message-----
> From: Dave Cole
> I may have gotten really lucky today...  Someone from the Electric Ops of
> the local Power Company was at my house to check out some locates, (I am
> switching to gas), and I mentioned the noise...  
> He got very interested, and pulled out something I have never seen...
> It is a long hand held blue unit, maybe 4 feet long, and 7 inches wide, with
> a LCD display on one end, and some sort of sensor on the other...
> In any case, he grabbed that, and we ventured up to the suspect
> transformer...  It was in quiet mode, (only S9 at my place, not 15 over like
> each evening, and morning), so I expected to see no real result...
> To my surprise he listened to it on his unit, (which pegged), and said that
> he suspects a loose ground, and wow this is not right!  He also said he
> would pass on my noise graphs to the Electric Ops folks so they can actually
> fix it before it fails, and for me to expect a call Monday!  
> WOW...  I may have gotten rid of my noise of two years finally!!!!! 
> More Monday...

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