[Elecraft] W1FB's QRP 4:1 Balun?

[Charles Greene]

Hi,

I use the type F114-43 with fewer turns, and it runs about 97% efficiency 
as a 4:1 balun with a 200 ohm non inductive load, and about 92% efficiency 
with a 5:1 SWR.   The size 50 would be a little less efficient, but not 
that much different.

At 01:22 PM 1/15/2004, Dennis  Payton wrote:
>Would someone please comment on the 4:1 balun on page 161 of Doug Demaw's
>QRP Notebook 2nd addition? It's an FT 50-43 with 12 bifilar windings. Its
>small size would make it a perfect companion to my KX1, but I fear it would
>be too lossy.
>
>Thanks!
>
>Denny Payton    N9JXY
>Auburn, IN
>
>
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73, Chas,  W1CG
K2 462b, 3571