Computer and RFI

[John A. Ross, IV]

>On Fri, 4 Aug 1995, Peter Jennings wrote:
>
>> Put snap-on ferrites on the keyboard cable where it enters the
>> computer. That has been the most common problem I have had with
>> RFI and computers here. It can almost always be solved with ferrites.
>>
>> The keyboard and cable make a nice antenna.
>>
>I somehow got knocked off the reflector while on vacation and missed any
>thread that might have followed this...  Anyway, this describes my
>problem to a tee and I'd like to know where I can find a few of these
>snap-on ferrite beads?  I have three networked computers in the shack all
>of which are getting RF generated key strokes.
>               Tnx             73,             Bob, N4BP
>

Hi Bob,

Using ferrites is pretty much the only answer. They can be found at Radio
Shack and most hamfests. Mail order source is Amidon (see QST/CQ).
If that doesn't fix it, replace the keyboard. They're only about $20
nowadays. Most places will let you return them if they don't work out.
73, John - WB2K

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John A. Ross, IV  - WB2K / VE2TJA [Zone 2]  (wb2k at ritz.mordor.com)
Summit, New Jersey
Contest DXpedition Registry ---------> http://www.mordor.com/wb2k
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