"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