[Antennas] 4:1 or 1:4?

[Dan Richardson]

At 10:24 AM 1/6/2002 -0800, you wrote:
>If you want to use the very best balun setup, isolate
>your entire transmatch using a non-conductive chassis
>and use a 1:1 50Ohm ferrite core current balun on the
>transmitter side of the transmatch. This works great
>except no commercial matcher does this, you must build
>it from scratch yourself and it doesn't work well with
>really high-Z loads since there is no impedance
>transformation at the balanced side. The balun always
>sees it's characteristic impedance on both sides (when
>you have the transmatch tuned, of course) so it's
>happy at all times and you can use a higher mu ferrite
>without worries.

That arangement does nothing to remove the strain on the balun caused by 
common mode current.

For further information on this I suggest you read Roy Lewallen paper on 
the subject at: ftp://eznec.com/pub/ibalbrf.txt

Danny, K6MHE