[RFI] New to the Group

[Ian White G3SEK]

Cortland Richmond wrote:
>There are two very common ferrites in 'EMI' beads, one optimized for 
>100 MHz or so, and the other for around 300 MHz.  The sellers may not 
>know (or even care) which mixture they're selling,

Worse still, they may be selling you some of each. ("They all look the 
same, so who cares?")

Buying surplus ferrites is like buying resistors with no color bands... 
and even harder to tell.


-- 
73 from Ian G3SEK         'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek