Jim,
Thanks for your response to my post. I accept your reasons for what you do
and have recommended.
However, for all my applications, I stand by my statement. For me, many,
many, many installations as I described have worked, and continue to WORK,
LIKE A CHAMP. I have done loss measurements and also checked for the
possible problem you propose. In all cases, nary a problem. YMMV.
73 de Milt, N5IA
-----Original Message-----
From: Jim Brown
Sent: Monday, March 07, 2011 12:49 PM
To: Milt -- N5IA ; 'TopBand'
Subject: Re: Topband: Preferred Choke Baluns
On 3/6/2011 9:32 PM, Milt -- N5IA wrote:
> And I make all of my choke baluns for 160 Meter energy from 30 turns, 6"
> in
> diameter, of whatever cable it is. This is coaxial leads as well as rotor
> cables, etc. Works like a champ.
>
I suggest that you MEASURE the effect before you say that it "works like
a champ." There are HUGE differences between what you suggest as
opposed to multiple turns of the coax around five #31 cores. Your choke
is inductive, so it can resonate with a feedline that is capacitive by
virtue of its length. The ferrite choke is resistive, has a MUCH greater
choking impedance, and cannot resonate with the feedline.
73, Jim Brown K9YC
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