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Re: Topband: Common Mode Isolation

To: <topband@contesting.com>, "Bill Tippett" <btippett@alum.mit.edu>
Subject: Re: Topband: Common Mode Isolation
From: "Tom Rauch" <w8ji@contesting.com>
Reply-to: Tom Rauch <w8ji@contesting.com>
Date: Wed, 28 Dec 2005 14:09:18 -0500
List-post: <mailto:topband@contesting.com>
>          Tom, most seem to recommend ferrites
> on the outside of coax to reduce common mode.  Why
> wouldn't a 1:1 isolation transformer with 2 turns
> on both sides of a binocular core do the same thing?
> Seems like this is how audio isolation transformers
> work and I would think it should work for RF also.

An outboard isolation transformer would work also.

It's just easy to do it all in the one unit by using a
primary secondary transformer, so that's what I do.

73 Tom

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