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Re: [TowerTalk] beads for keyboard or microfone cable

To: "'Tower and HF antenna construction topics.'" <>
Subject: Re: [TowerTalk] beads for keyboard or microfone cable
From: "Jorge Diez - CX6VM" <>
Reply-to:, "Tower and HF antenna construction topics." <>
Date: Wed, 10 Feb 2010 14:28:06 -0200
List-post: <">>

Thanks very much to all for the information.

Will se in this other customers. Just did a google and found Amidon.

I want to have some of them in the shack. Fortunately all is OK in my shack,
no keyboard typing alone!!... but since a friend will be visiting me next
month, is the opportunity that he bring me some ferrites, toroides that I
cannot find in my country.

I want something to solve some interferences when other friends bring
radio/amps to my station when we do a muti single contest.

Sometimes we say to add beads, toroides (don´t know exactly how to name them
in English) and we don´t have, so I want to have some of this that will be
useful in an situation that we experiment some interference or RF.



-----Mensaje original-----
[] En nombre de Jim Brown
Enviado el: Miércoles, 10 de Febrero de 2010 02:12 p.m.
Para: Tower and HF antenna construction topics.
Asunto: Re: [TowerTalk] beads for keyboard or microfone cable

On Wed, 10 Feb 2010 12:03:57 -0200, Jorge Diez - CX6VM wrote:

>I will order a snap on beads to add in the keyboard, microfone, mousse,
>interfaces cables.

What problem are you trying to solve? 

>I think the 31 material will be OK, but
>not sure about the dimensions because I am not familiar with inches

Amidon has historically been a VERY EXPENSIVE place to buy things like this.

Appendix One of my RFI tutorial includes a list of MUCH BETTER vendors who 
sell EXACTLY the same parts at MUCH LOWER PRICES. A company called Fair-Rite

is the actual manufacturer of these parts, and they have distributors all 
over the world.  
Unfortunately, I don't see any distributors in South America, so you may be 
stuck with ordering from the US. 

My tutorial is at  

The snap-on bead listed in Appendix One that fits RG8 is good for multiple 
turns of smaller cable.  The "big clamp-on" listed in Appendix One is good 
for multiple turns of larger cables. 


Jim Brown K9YC


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