Ferrite Toroids

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

This assembly is a double stack of a high permeability mix 31 toroids, a 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 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 balun used from 7-54 MHz The low permeability mix provides...

This is low permeability (<300) custom ferrite mix used by Balun Designs for most wire wound designs.  The permeability is the best for most wire wound baluns and ununs.  Can be used bare or inserted in Teflon tubing for greater voltage...