Re: IR Over Coax

["egelbeertje" <r_d_k@xxxxxxxxxxx>]

Just to piggyback on this one, I have a similar problem with 2
peephole receivers on my Xantech system, they seem to pick up
some "noise", resulting in always lit up mouse emitters unable to
control devices, anybody knows a trick to kill that noise. (they are
the brass type receivers - if I touch them the noise level goes down
so guess it must be earth related)

--- In ukha_d@xxxxxxx, "Andy Laurence" <andy@a...> wrote:
> From: Keith Doxey [mailto:ukha@d...]
> > --- In ukha_d@xxxxxxx, "Andy Laurence"
<andy@a...> wrote:
> > > I've plugged in my RF link and RF
> > > link plus, but it doesn't seem to work.  I noticed that my
Tivo
> > > remote has
> > > stopped working too, so after covering up the transmitter, I
> > > realise that
> > > it's transmitting IR constantly and overpowering Tivo's
remote.  I
> > > covered
> > > up the receiver in the bedroom to see if that was getting
light
in,
> > > but
> > > that's made no difference.  Any ideas why it's making so
much
> > > noise, and why
> > > I can't control Tivo in the bedroom?
> >
> > Where have you located the IR receiver in the bedroom ?
>
> It's currently sat on the TV.
>
> > Does the problem only occur when the TV set is ON ?
>
> Hmmm, not tried it with the TV off.
>
> > I have an IR543 for my X10 control in the lounge and if I place
it ON
> > the TV it just wont work, moving it slightly away makes it work
fine.
>
> I'll try that tonight.
>
> > There are very strong electromagnetic fields around a TV set
(just
> > try holding a neon screwdriver anywhere near the back and watch
it
> > light up!).
>
> Didn't think of that.
>
> > You seem to have eliminated light pickup as a possible cause
because
> > it is still jammed even when shrouded but that wont stop EMI from
> > upsetting it. If it is on or very close to the TV, try moving it
> > further away.
>
> Cheers,
> Andy
> --
> http://www.andylaurence.co.uk