IZ4AKO 1:1 BALUN - Last Update 21/01/2011


Following IZ0HCC's suggestion, I made a 1:1 BALUN suitable for 40 / 80 meters band. Here is some pictures

The core of the balun.

The protection

The reflection measurement ( HP8752C )
-13dB @ 1.8MHz
-17dB @ 3.5MHz
-20dB @ 7MHz
-14dB @ 28MHz