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[RFI] Computer monitor RFI

To: <rfi@contesting.com>
Subject: [RFI] Computer monitor RFI
From: Paul Hicks, VE3ZT" <ve3bbh@interlog.com (Paul Hicks, VE3ZT)
Date: Sun, 26 Dec 1999 20:21:31 -0500
For starters, the next time I purchase a monitor, it would have the
European "CE" designation. My 17" MAG monitor behaves similarly as yours
does. I've tried RFIing the power cord and cord from the monitor to the
computer, to no avail. I haven't checked too deeply into this, but I'm
assuming that the monitor itself is emitting crap and is being picked up by
my various antennas, and/or feedlines.

If I ever purchase another computer, hard drive, etc., I'll also make sure
that the "CE" designation is stamped on all the peripherals.

73, Paul

At 02:19 AM 12/26/1999 -0500, you wrote:
>I just got a 19 inch Veiwsonic monitor to replace my 15 inch NEC multisync 
>4FGe that I have been using for the last few years. I get S5 - S8 noise
>75 - 77 KHz (this can be changed by changing the monitors refresh rate but 
>the problem remains).  Thinking it might be this particular monitor I 
>switched it for a new NEC V90 19 inch monitor with no real change. The 
>interference seems to be coming from the monitor itself.  If I turn off the 
>monitor with the computer running as normal the noise goes away.  Seems to
>considerably less when using DOS programs.  No amount of ferrites or toroids 
>on AC line or video cable make any difference.  Moving the monitor away from 
>the receiver helps but the problem persists in any reasonable distance from 
>the operating position.  The ground floor station has a good RF ground
>The large viewing screen is very addictive
>Have gone back to my 15 inch NEC but miss all that space for extra info
>Has anyone had a similar problem and have a solution ??
>Considering trying a flat screen LCD monitor but they are kinda expensive
>Tnx for any input,
>Steve  AC6DR
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