[RFI] Tv interference

[Roger D Johnson]

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 at 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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