[TenTec] FW: RFI trash!

Gary Hoffman ghoffman at spacetech.com
Thu Jun 12 17:59:42 EDT 2003


Good idea.  There is also a brute force one written up in the Handbook for
years.  I've built them and they are excellent.... provided of course that
the AC line is the path for the noise.  Don't overlook all the many other
leads in and out of a computer.

73 de Gary, AA2IZ


----- Original Message ----- 
From: "Rick Williams" <rick.williams at telus.net>
To: "TenTec (E-mail)" <TenTec at contesting.com>
Sent: Wednesday, June 11, 2003 12:32 PM
Subject: [TenTec] FW: RFI trash!


>
> Al you may be interested in the junk box brute force computer power supply
> RFI filter described on my web site.  It works!
>
> 73,
>
> Rick
> VE7ASR
>
> Web site:  http://www3.telus.net/ve7asr
>
> >
> >-----Original Message-----
> >From: tentec-bounces at contesting.com
> >[mailto:tentec-bounces at contesting.com]On Behalf Of wb5jnc at juno.com
> >Sent: Wednesday, June 11, 2003 10:52 AM
> >To: tentec at contesting.com
> >Subject: [TenTec] RFI update
> >
> >
> >
> >Greetings all,
> >
> >About a month ago I posted a message about an intermittent RFI problem on
> >the AM BC band and 160M (which shows up spaced at approximately 138 KHz
> >intervals). I had continued to try to track it down as time/WX permitted
> and
> >had narrowed it down to my house and the neighbor behind me. Yesterday
the
> >neighbor's jr. op was out mowing the lawn so I went over and talked to
him
> >after he finished. It turns out that he came home from college about the
> >time the RFI started. He brought his clone computer home that they had
> >bought for him last fall when he went off to school and started using it
> >here. I have checked from their QTH and the RFI seems to disappear
> >completely with unplugging it -- now I need to get on the landline with
him
> >and check from my QTH. I had him unplug it as a secondary test because
when
> >it was on it _completely_ wiped out the AM radio in the hall outside his
> >room with broadband noise! (BTW the computer is an "Alaska" brand: PS
says
> >"Made in China" as to be expecte!
> >  d.)
> >
> >Does this sound like it could be the culprit, and if so, what's the best
> way
> >to get it resolved? (The family is very cooperative and the system is
less
> >than 1 yr. old, so the question would seem to come down to whether the
> >dealer or the manufacturer is responsible if I can prove that this system
> is
> >the source of the RFI.)
> >
> >TNX/73, Al
> >
>
>
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>




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