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Re: [RFI] Keyboard

To: Joe <nss@mwt.net>
Subject: Re: [RFI] Keyboard
From: dalej <dj2001x@comcast.net>
Date: Sat, 3 Mar 2018 09:32:18 -0600
List-post: <mailto:rfi@contesting.com>
I’d use a #31 mix snap-on and wrap several turns though it.  I purchase mine 
from Mouser.  I don’t have the PN handy but if you need it let me know.  

Those from RS I don’t count on to do a good enough job.  

73
Dale, K9VUJ



On 03, Mar 2018, at 9:24, Joe <nss@mwt.net> wrote:

Is RF getting into a keyboard issue OK here, it is RFI in a way..

OK, Say you get RF into a USB keyboard. It just stops working and the only way 
to get it working again is a total re-boot.

I'm assuming the best option is ferrite beads on the cable.

Now question, where is the best placement of the beads. Keyboard end? Computer 
end?  BOTH?

I have two here, a small one where I could get one or two passes through the 
hole. ( it is a Radio Shack split thing )

and then a much larger one, also split,, but the hole is close to a inch ID. so 
I could do many turns.

What would be best to put where?

Joe WB9SBD
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