[Elecraft] Source for Type 31 Toroids

[Jim Brown]

On 2/10/2012 11:35 AM, Ken Alexander wrote:
> Somebody should be thinking "maybe our website isn't that easy to use."

It's designed for engineers who are looking for a wide variety of 
ferrite parts for a wide variety of uses. From where I sit, Fair-Rite 
has by far the best technical website I've ever seen, and nothing else 
I've seen in the last 30 years is close.  Their published data is 100 
times more detailed and informative than any of their competitors. A lot 
of what I know about ferrite materials I've learned by studying their 
published data. To get as much and as good data as theirs you've got to 
go back at least three decades to publications like the huge data books 
published by companies like National, Motorola, GE, Fairchild, and RCA 
for their semiconductors and tubes, and Electro-Voice for their 
microphones and loudspeakers.

Historically, Fair-Rite has also very good about supplying engineering 
samples for those doing real design work.  When I first began the 
studies that led to all of the work I've published, Fair-Rite provided 
me with hundreds of samples of several dozen parts I requested, never 
asking anything beyond the normal questions a regional rep would ask. 
It's paid off for them -- the #31 toroids EXIST because I asked for 
them, and thanks at least in part to the work I've published on using 
multi-turn chokes, the #31 material has replaced older materials for 
suppression at MF and HF.

73, Jim Brown K9YC