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Topband: Beverage Feed Line Choke Installation

Subject: Topband: Beverage Feed Line Choke Installation
From: Bill Tippett <>
Date: Mon, 01 Jun 2009 08:48:14 -0400
List-post: <">>
 > I understand that low-output RX antennas like flags, pennants, and
various loops need more common mode suppression than Beverages.  I
wonder if two of those chokes, with a ground in between, 10-15 feet
from the matching transformer, would be a satisfactory design.

         I doubt it.  I believe the choke needs to be as close to
the feedpoint as possible.  Carlos N4IS is very knowledgeable about
flags and uses 14 turns of RG-58 on a FT 244-77 toroid (or 14 turns
of RG-174 on FT 140-77) on his Waller Flags (two chokes).

                                 73,  Bill  W4ZV

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