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Re: [RFI] High Noise Floor

To: "Roeder, Landon" <LRoeder@nespower.com>, <rfi@contesting.com>
Subject: Re: [RFI] High Noise Floor
From: "Robert Tellefsen" <n6wg@comcast.net>
Date: Mon, 8 Oct 2007 12:59:11 -0700
List-post: <mailto:rfi@contesting.com>
Hello Landon
Were you able to check for any directionality of
the noise source with a loop antenna?  That might
at least narrow the search to some degree.
Good luck and 73
Bob N6WG

----- Original Message ----- 
From: "Roeder, Landon" <LRoeder@nespower.com>
To: <rfi@contesting.com>
Sent: Monday, October 08, 2007 4:17 AM
Subject: [RFI] High Noise Floor

> We have a customer who contacted us regarding "RFI" at his home station.
> We were able to trace a single source to an underground water pump
> operated by Metro Water.  (What a weird noise that was.)  Even though
> that noise is clear, he is still complaining about what he believes to
> be RFI on 75m with his SteppIR vertical .  Using our Radar Engineers
> MODEL 240-A, we are able to see an elevated noise floor, but there are
> absolutely no distinguishable power line signals.  The "noise" is also
> audible/visible when mobile in his neighborhood.  Other than the usual
> isolation techniques inside the home, how can we help him determine the
> source of a signal that has no noticeable characteristics, other than an
> elevated noise floor?  Realizing that this is no longer the power
> company's responsibility, what recommendation would you offer him?
> Landon D. Roeder, KC5ACP
> Engineer II, Test Section
> Nashville Electric Service
> Office: 615-747-3309
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> RFI@contesting.com
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