[RFI] clamp on ferrites at Mouser

[Jim Brown]

On 6/17/2014 5:44 AM, Jorge Diez - CX6VM wrote:
> What I understand is that the # 31 is good for frequencies below 5 MHz, but
> my question is what to put in internet modem cables, transformer notebook,
> cable RS232 as don´t know where frequencies they are.

We put chokes on these cables so that they will not radiate trash on our 
ham bands, so it is OUR frequencies that determine the chokes. For 
example, if we want to kill RF noise on 40 and 20M, we wind the chokes 
for those frequencies.

73, Jim K9YC