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[RFI] RFI resistant telephones

To: <rfi@contesting.com>
Subject: [RFI] RFI resistant telephones
From: w7ti@dslextreme.com (Bill Turner)
Date: Sun, 01 Dec 2002 08:25:06 -0800
On Sun, 01 Dec 2002 09:54:01 -0600, Edward F. Douglass wrote:

>As part of my diagnosis, I need an RFI-resistant telephone in order to 
>determine if phone company equipment (lightning arrester, RF bypass 
>capacitors, or other devices) are rectifying my transmit RF and putting 
>audio on the phone line.


Several years ago I bought a "see-through" phone from Radio Shack
that was absolutely bulletproof against RFI.  It was shaped like
the traditional Princess phone and made of transparent plastic.
I tested it at several locations in the house, including directly
under a yagi at 50 feet running the legal limit.  Zero pickup.

Don't know if they sell them anymore, but if you can find one, it
should do the job.

73, Bill W7TI

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