[TenTec] Pegasus and computer noise problems

[Richard B Drake]

I was having a couple of minor computer related rf problems. One
was that when I operated on 80 meters some rf was getting into the
computer via the RS-232 rig control cable and causing my keying
circuit to latch up. A second was that I was hearing some noise in
my receiver on 15 meters that seemed to be coming from the USB
cable going to my modem. I remembered an old trick from the ARRL
antenna book of forming an rf choke in coax simply by winding
about 7 turns of coax in a tight loop and taping it up. If it
works for coax, why not for computer cables? So, I made just such
a coil on both the RS-232 and the USB cables. Both problems gone.
Very simple to do and worth a try if you have a little slack
cable.

---
73, Rich - W3ZJ
w3zj@arrl.net

> -----Original Message-----
> From: owner-tentec@contesting.com
> [mailto:owner-tentec@contesting.com]On
> Behalf Of George T. Baker
> Sent: Tuesday, April 11, 2000 12:52 PM
> To: Richard W. Hemingway
> Cc: tentec@contesting.com
> Subject: Re: [TenTec] Pegasus and computer noise problems
>
>
>
> I intended to mention this earlier, but it slipped my mind.
>
> I use a Kachina computer-controlled radio and noticed
> several interfering
> signals on the 20-meter band. These seemed to be
> computer related.
>

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