RE: [OT] Baby monitor picking up "hum"

["BUTLER, Tony, FM" <roaming@xxxxxxx>]

I'm getting that of late too Tim.  For some reason unplugging for a
few hrs
and plugging in again does the trick.
It's a digital one with 20 channels to choose from & I get the problem
on
all channels.
Has worked fine for 18 months or so and hasn't been moved to be any
nearer
to mains cables etc.
I though these digital ones were supposed to be immune from interference
:(


Tony
> -----Original Message-----
> From: Hawes,Timothy Edward (GEG) [mailto:haweste@xxxxxxx]
> Sent: 17 July 2002 09:23
> To: 'ukha_d@xxxxxxx'
> Subject: [ukha_d] [OT] Baby monitor picking up "hum"
> 
> 
> OK, so not strictly an HA application, but one that's been 
> bugging me for a
> while.
> 
> We've got a "Tomy" baby monitor which has started to 
> broadcast unwanted
> noise from the receiver, an electrical "hum". We've changed
> the wall-wart as
> that appeared to have a different fault and it now seems a bit
worse.
> There's approx 1m of cable between the wall-wart and the receiver,
> terminating in a centre-positive-type jack plug.
> 
> Would one of these clamp on magnets stop the hum being picked 
> up ? (like the
> things you see on monitor cables etc.)
> 
> The hum is most noticeable at night (when the house is quiet) and
the
> monitor is not placed near *lots* of mains cabling, although 
> it is plugged
> into the wall.
> 
> Any thoughts ?
> 
> Thanks,
> 
> Tim H.
> 
> +
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