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Re: [RFI] Tv interference

To: "Olinger, Steven L" <steven.olinger@mnsu.edu>
Subject: Re: [RFI] Tv interference
From: Roger D Johnson <n1rj@adelphia.net>
Date: Thu, 19 Jan 2006 15:02:27 -0500
List-post: <mailto:rfi@contesting.com>
Olinger, Steven L wrote:
> I recently had a new Trane high efficiency furnace installed in my home.
> When the burner comes on, channels 2-6 have interference on the screen.
> I use an antenna for reception, not cable or satellite.  Trane has been
> contacted, but are not sure what the problem is.  I have replaced and
> rerouted all the coaxial cable from the antenna to the television sets.
> The fan runs all the time at different speeds, but when the furnace
> calls for heat the interference starts.  All TV sets in the house
> receive the same interference.  Has anyone dealt with this problem or
> know of a solution?
> Steve Olinger
> Electrician Supervisor
> Minnesota State University Mankato
> Phone 507-389-5170  Fax 507-389-6664
> E-mail steven.olinger@mnsu.edu
Is this an oil furnace? If so, I suspect that the ignition transformer
is energized whenever the burner is on. The resulting spark gap
transmitter can cause interference over a wide band of frequencies.

73, Roger

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