[TowerTalk] Best Balun

James C. Hall, MD heartdoc at nwtcc.com
Wed Nov 26 20:48:18 EST 2014


I have to agree with Jim here. The old B-1 balun Force 12 sold was not very
good - I managed to burn out a couple. The SWR was never as flat as with the
'ugly balun'. :)

73, Jamie
WB4YDL

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of Jim
Brown
Sent: Wednesday, November 26, 2014 7:21 PM
To: towertalk at contesting.com
Subject: Re: [TowerTalk] Best Balun

On Wed,11/26/2014 5:02 PM, Herbert Schoenbohm wrote:
> (Chip K7JA) their bead balun model EB-1 as this is easier for me to 
> install on the boom compared to the Comtek boxed unit which also 
> looked very good with their specs..

AAARGH! Most strings of beads are terrible chokes, because they are
inductive, not resistive, at the operating frequencies. This is discussed in
the tutorial I referenced earlier in this thread.

73, Jim K9YC
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