Just a quick repeat of my comment earlier - you can't just turn off the
PC and the monitor. You must remove all AC and backup DC power from
them. I had a monitor that spewed noisy carriers all over the place and
the only way to quiet it was to pull the AC plug. Simply powering it off
made no discernable difference. Threw me off until I used a portable
radio to home in on the problem, and when I pulled the AC cord, the QRM
disappeared. It got replaced with a nice quiet LED monitor.
73, Duane
On Mon, 17 Jan 2005 11:45:00 -0800 (PST) "James C. Owen, III"
<k4cgy_list@yahoo.com> writes:
> Hi Jim,
> Have you tried turning off the computer? I suspect if it's
> coming from the computer system it's the monitor. I have a lot of
> monitor noise on the TV with this monitor and some on spot
> frequencies on HF. Yes it could be the cables. You could slip
> some braid over the leads and ground one end, that will usually
> take care of cable radiation. I've never found the snap-on
> ferrites to do much.
> 73 Jim K4CGY
> --- Jim Miller WB5OXQ <wb5oxq@grandecom.net> wrote:
>
> > Thanks to all my Orion is performing better but, I still have a
> > lot of noise on 80 meters and I thing my pc may be to blame for
> > some if it. This pc is NOT connected to the Orion in any way,
> > The pc has a steel case and it is grounded to the shack master
> > ground. Could my I/O cables be radiating?
> >
> > WB5OXQ, Jim in Waco> No virus found in this outgoing message.
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> > 1/16/2005
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--------------------------------------
Duane Calvin, AC5AA
Austin, Texas
http://home.austin.rr.com/ac5aa
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