[RFI] clamp on ferrites at Mouser

[Jim Brown]

Jorge,

Somehow you do not understand.  You must wide 5-7 turns through the 
ferrite part. See photos of the coax chokes in the RFI tutorial. That 
requires a much larger part.  For smaller cables, 0431173551 and 
0431176451 are a good choice. For larger cables, use 0431177081, or a 
stack of 2631803802 toroids.

73, Jim K9YC

On 6/17/2014 1:02 PM, Jorge Diez - CX6VM wrote:
> Thanks Jim!
>
> So finally I will use LMR-240-UF
>
> Will order round cable snap-its
>
> Seems that part number 0431164281 will be loose on the coaxial and will not
> be held near the connector
>
> Anyone tried part number 0431173951 with LMR-240-UF?  Will close on this
> cable? Will be very bad if I buy a lot of them and then I see that don´t
> close.
>
> Thanks,
> Jorge
> CX6VM/CW5W
>
>
>
> -----Mensaje original-----
> De: Jim Brown [mailto:jim at audiosystemsgroup.com]
> Enviado el: martes, 17 de junio de 2014 01:22 p.m.
> Para: Jorge Diez - CX6VM; Rfi List
> Asunto: Re: [RFI] clamp on ferrites at Mouser
>
> 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
>