On Monday 10 November 2003 06:11 pm, crak600 wrote:
> On Tuesday 11 November 2003 03:46 am, Marc wrote:
> > Not all that odd at all. A classic case of TVI ( TV interference
> > ) And there could be a number of causes. Do you have any kind of
> > a large plastic window cut into your computer like a lot of folks
> > do for game machines, that could be a factor. What you have is a
> > signal escaping from your computer and probably mixing with an
> > other signal producing a sum and difference frequency that is in
> > the reception range of your TV or cable box. If you want to stop
> > this signal leakage go to Radio Shack or a good electronics
> > suppler and get some ferrite beads to go around any cables coming
> > out of your computer. Power cord speakers, printer cable etc. Put
> > the ferrite beads on the cables as close to the computer as
> > possible and the problem will probably dissapear. This is the
> > short quick explanation. Whole books have been written about this
> > sort of problem so needless to say I don't have the space to go
> > into all the detail here.
>
> my computer is in a cabinet in my desk, solid box, no plastic
> windows or anything like that. the nearest TV is directly above me
> in a bedroom, and there's 2 walls between the computer and the TV
> in the living room. so nothing is extremely close to it.
>
> the strangest part though, was that was was coming through the
> speakers was NOT on the TV at the time. the audio from a Discovery
> Channel show on the Loch Ness monster was coming through, but when
> i ran into the next room and switched the TV to discovery channel,
> that show wasn't on.
>
> maybe i have found the loch ness monster....it's living in my
> computer desk....lol
>
> thanks Marc.
>
> Mike
Still it is a classic TVI problem. The ferrite beads will probably
solve it. It also sounds like you have some rather bad leakage from
your cable TV system installation. Cable company's are well known for
leakage problems. If it should happen again you may want to unplug
cables from your computer 1 at a time and see if it goes away. ( a
bit difficult to do with the power cable ) The power cable sounds
like the first place to try a ferrite bead. When you enter into the
world of RF ( radio frequency ) strange things can and often do
happen or at least they seem strange at the time. If you get to
understand the nature of RF it all starts to make perfect sense. Fun
stuff more addicting than computers LOL. The kind of signal mixing
that you are talking about is common, in fact a lot of folks use it
to listen to cell phone calls on scanners that have the cell phone
frequency's blocked.
I hope this has shed at least a small amount of light on the subject
for you.
Marc
KM5KW
Want to buy your Pack or Services from MandrakeSoft?
Go to http://www.mandrakestore.com
