On Sat, 05 May 2007 06:29:25 -0700, Danny Richardson wrote:

As you have a vector impedance meter have you measured the common mode
(blocking) impedance? From the description your balun is a voltage balun
that are notorious for having poor common mode impedances.

Danny, K6MHE

Yes, the balun is a 4:1 voltage type. I have not measured the common
mode inductance yet. But in this case, the application is for a Carolina
Windom which requires common mode current to make part of the feedline
act as a radiator.

The feedline will be choked with a 1:1 current balun at the proper
distance. That is next on the list to be built.

--Teh

On Sat, 5 May 2007 19:13:18 +0000 (UTC), Tehrasha Darkon
wrote:

Yes, the balun is a 4:1 voltage type.

Hi Teh,

Then, yes, you certainly have to worry about core saturation and
failure.

73's
Richard Clark, KB7QHC

On Sat, 5 May 2007 19:13:18 +0000 (UTC), Tehrasha Darkon
wrote:

Yes, the balun is a 4:1 voltage type. I have not measured the common
mode inductance yet. But in this case, the application is for a Carolina
Windom which requires common mode current to make part of the feedline
act as a radiator.

The feedline will be choked with a 1:1 current balun at the proper
distance. That is next on the list to be built.

--Teh

Okay, then in that case be sure to check the common mode impedance on
your current balun. Many are less than 1K and, for good operation
you'll need more than that. The higher the better.

Danny, K6MHE