9 To 1 Balun Using Dual T157 Torroids

I have covered several times before of long wire antennas and 9-1 baluns. To make one smaller and easier to backpack with and do more sota work with I combined 2 T157 torroids (for working more power comfortably) and made a new 3d model design to house it all.

To start you can download and print off the 3d model to house everything here


Use the following as a guide in wiring the torroids


The following will show case the 3d print and assembly. My former 3d print had the 9-1 balun written on it. But since it is easy to make any balun in this box I took that off, leaving only indications for the port for the antenna and the ground wire






With the new curved design on top I found it a lot easier to get it up through the branches of the tangly trees that make up the wilderness of newfoundland.