[Elecraft] Toroid Balun Cores

[Jim Brown]

On 10/16/2011 4:29 PM, Vic K2VCO wrote:
> two different materials used in
> toroids (etc.): Ferrite and powdered iron.

AND each generic type -- ferrites and powdered iron -- have many 
variations that are VERY different from each other.  The ferrite types 
are different as a result of their chemical MIX, and every MIX is 
designed for a different use -- that is, suppression over one range of 
frequencies and/or inductance in a different range of frequencies.

See the RFI tutorial on my website about these matters.

73, Jim Brown K9YC