This assembly is a double stack of mix 31 toroids, a high permeability mix used by Balun Designs for many coax wound 1:1 baluns. High permeability suppression mix provides excellent choking performance but should be used with 1:1 ratio baluns only...

This assembly is a double stack of medium permeability mix 43 toroids. Best choice for medium to high power End Fed Half Wave transformers (=< 1kW)

This assembly is a double stack of a low permeability (<300) toroids, a custom ferrite mix used by Balun Designs for most wire wound designs. This mix is the best choice for a coaxial wound suppression/choke balun used from 7-54 MHz The low...

Full size (2.4") mix 31 ferrite with white identifying color and surface sealer/coating that provides excellent long term weatherproofing.  

This is a mix 43, medium permeability toroid best for moderate power (<= 500w) EFHW designs and choking above 40 MHz.

This is low permeability (<300) custom ferrite mix used by Balun Designs for most wire wound designs.  Best permeability for most wire wound baluns and ununs. Not recommended for EFHW. Can be used bare or inserted in Teflon tubing for very...

Mil Spec M17/111 coax that is just right for winding numerous types of suppression/choke baluns and some ununs.  This coax is very rugged but also somewhat stiff due to the Teflon insulator and silver clad solid steel center conductor.  It also...

The venerable 1:1 isolation/choke balun is the first of our new line of DIY kits.  All components are the same as those used in our pre-assembled units. This finished balun will have an SO-239 for input, two 1/4" eyebolts for wire elements and one...

All components are the same as those used in the Balun Designs pre-assembled model 1113t. The completed balun will have an SO-239 for input and two 1/4" studs for the output and is typically used for, but not limited to, feeding a yagi or beam antenna...

The venerable 1:1 isolation/choke balun is the first of our new line of DIY kits.  All components are the same as those used in our ready made units. The completed balun will have an SO-239 for both input and output. Kits do not require production...

The venerable 1:1 isolation/choke balun is the first of our new line of DIY kits.  All components are the same as those used in our pre-assembled units. This finished balun will have an SO-239 for input two 1/4" eyebolts for output.  This...

We are now offering this and an expanded line of kits on our newest website balunsetc.com   The venerable 1:1 isolation/choke balun is the first of our new line of DIY kits.  All components are the same as those used in our...