"Iain Churches" wrote in message
...

"tony sayer" wrote in message
...
In article , Iain Churches
writes

"Jim Lesurf" wrote in message
...


FWIW If you are worried about 'RF' then you should also worry about
interference which is directly radiated into units. e.g a mobile phone
in
the same room as the audio system, coupling in via the speaker leads. A
mains filter will have no effect on this. Hence it is the kind of thing
the
designer should have considered...

Hello Jim. That was to be my next question. In some digital production
suites, the use of mobile phones is strictly forbidden, and the
receptionist
takes them from clients as they come in the door.

Not a bad idea for more reasons than one!..


The first time I came across this was after someone had used a mobile
while a digital backup was being made to Exabite. The streamer failed
to load it the next day. The tape was sent to the workstation
manufacturer
who pronounced that it had been rendered unreadable by GSM traffic.

Iain




When I was presenting regular live broadcasts on ILR, the station required
that studio guests had their mobiles switched off. Not only interviewees and
muso's but the folk who legitimately get past the glass for the 'thrill' of
on-air sightseeing ;-) Its enough describing the studio to them in music
breaks without the mating calls of mobiles (Analogue desk then). At least
we had no problems with that kind of interference and of course observers
obeyed the red light.... except for the one not so memorable school kid who
broke wind loudly...

Mike