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Re: [TowerTalk] Vacuum variable / inductor ratings for shunt fed tower

To: K4SAV <RadioIR@charter.net>
Subject: Re: [TowerTalk] Vacuum variable / inductor ratings for shunt fed tower
From: "Richard (Rick) Karlquist" <richard@karlquist.com>
Date: Thu, 11 Jun 2009 20:25:07 -0700
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
K4SAV wrote:
> N6RK wrote: "I spent a lot of time analyzing the balun in my MonstIR and 
> characterizing it on a network analyzer."
> 
> I have always wondered how well that thing worked.  They use half of the 
> core for a voltage balun and they use the other half for a choke by 
> winding a few turns of the coax thru it.  What does your measurements 
> tell you about how well the common mode choke works?
> 
> Jerry, K4SAV

I didn't measure it as a common mode choke because I thought it was
a voltage balun.  The fact that the coax is one of the windings
does not necessarily indicate that it is a common mode choke.

Rick N6RK
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