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Re: [Towertalk] Choke Balun on RG-59 Coax?

To: "Eric Rosenberg" <wd3q@erols.com>, towertalk@contesting.com
Subject: Re: [Towertalk] Choke Balun on RG-59 Coax?
From: Joe Reisert <jreisert@jlc.net>
Date: Mon, 24 Jun 2002 19:50:42 -0400
List-post: <mailto:towertalk@contesting.com>

Assuming you are using the correct type and amount of ferrite beads, the coax type will not change the attenuation one bit. 50 type 73 beads should do OK on 80 and so so through 160 meters. However, I use 100 so that the 160 meters for a greater margin and more de-coupling. These receiving antennas are very sensitive to feedline coupling which really can degrade the inherent performance.


Joe, W1JR

At 10:42 AM 6/24/2002 -0700, Eric Rosenberg wrote:

I'm going to feed my new 80/160 EWE's with RG-59 (have LOTS of
it!) and want to put choke baluns at the feedpoint.

I have the Wireman kits and QST article, but would rather put
the ferrites directly on the feedline.

The question:  how many beads do I need (considering that RG-59
isn't the same as the RG-303 that is called for in the article),
and what size.

Thanks in advance,

Eric W3DQ
Washington, DC

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