On Sat, 02 Jun 2007 09:46:31 -0500, Cecil Moore
wrote:

wrote:
All I
want to know is if the toroids would be any good for HF 1:1 baluns.

An antenna analyzer, like the MFJ-259B, is a very
useful piece of test equipment for all types of
measurements of this kind. Using the MFJ-259B, I
discovered that the Amidon brochure, "showing typical
'Z' in ohms for one turn at 25 MHz", is misleading.
Their "one turn" goes through the core twice which
I consider as being two turns. That's bad news for
w2du baluns.

If you could gain access to an MFJ-259B, you could
run the same kind of measurement on your toroids.
Heck, if you send one to me, I will run the experiment
and send it back to you.

Hi Cecil,

You need to move up a notch. Check out http://w5big.com/

I've had one for several months now and won't want to be without it.

Danny, K6MHE