[RFI] ft240 Designation

[Jim Brown]

On 11/10/2021 12:01 PM, Chuck Gooden wrote:
> Could someone explain where the FT240-31 designation for ferrites came 
> from.

The FT240 designation came from Richard Amidon, so that his company 
could re-sell parts that Fair-Rite manufactured at exorbitant markups 
(like 5X their cost). The real part numbers of the most parts most 
useful to hams are here.
k9yc.com/RFI-Ham.pdf

and at https://www.fair-rite.com/

Fair-Rite is a family-owned US company with manufacturing both in the US 
and their own factory in China.

73, Jim K9YC