I am moving the telephone wall socket in my study because I'm
> often checking out some extra phone device and need better
> access than a single socket at floor level. A simple extension
> lead may not work too well because they don't usually have
> twisted pair wiring, so I'm told they can pick up interference
> and I have enough interference on the line anyway.
>
> I need some advice on positioning the sockets.
>
> I was going to put in a double socket (two double sockets
> actually) about 10-12 inches above the level of my desk. Any
> devices I am looking at would be able to rest on the desk.
>
> The master socket is in another room so these are all extensions
> sockets wired in parallel.
>
> I chose a height of 10-12 inches above the desk because if the
> socket was too low then any phone plugs and adaptors which stuck
> out might jostle with papers, books and desk things.
>
> One problem for the new sockets in this position is that an old
> style PC monitor (CRT) would be about 2 feet away. I really want
> to avoid creating line noise so do I need increase this
> distance?
>
> On the other side of the sockets are flourescent light fittings.
> Some are compact flourescent bulbs and there is a 20 inch long
> strip bulb too.
>
> Any thoughts on positioning. Sensible ones please (the ceiling
> isn't going to work!)
>
You should not pick up any noise from the monitor unless the phone line is wrapped around it - you are more likely to pick up line buzz in the phone itself.
Unless your fluorescents have dimmers (and so work at high frequency) again you are unlikely to get interference.
....but there's only one way to find out.