[WT-support] RFI and Wintest

Bob Wilson, N6TV n6tv at arrl.net
Tue Mar 25 21:58:48 CET 2014


Try a different keyboard, maybe a wireless keyboard and mouse, or put
ferrite beads on all cables leading to the PC, as many turns as you can.
 Mix #31 works well.

Of course make sure it's really RFI and not a configuration error.  Perhaps
the PTT and CW pins are reversed.  This will cause a key down carrier for
the duration of the message.

73,
Bob, N6TV

On Tue, Mar 25, 2014 at 1:53 PM, Stewart GM4AFF <stewart at gm4aff.net> wrote:

> I am having some problems with RF getting into my PC and upsetting the
> WIntest keying. I can do what I like with the paddles when I run power, but
> as soon as I touch a WIntest function key to send CW it just locks
> everything up with a solid transmitted carrier. I was able to eliminate
> this on my last PC by grounding the case and using WiFi, but not on this
> PC. It's only bad on 15 and 40m. The 15m antenna is quite near the shack
> and the 40m antenna has a bad SWR at the moment - so I know the cause.
>
> Does anyone have advice on what can be done to prevent this - practical
> down-to-earth solutions (excuse the pun).
>
> Thanks!
>
> Stewart
>
> GM4AFF
>
>
>
> _______________________________________________
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> support at win-test.com
> http://lists.f5mzn.org/cgi-bin/mailman/listinfo/support
>
>
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