>
>
> "Foxtrot" wrote in message
> news:Xns9A57AA15ACE8ED712E3@127.0.0.1...

>>I am in the UK and want to make several phone extensions.
>>
>> QUESTION: I would like to know I this will increase the level of
>> hum.
>>
>> ISTR UK phones have a transformer and some other components to
>> neutralise hum but would that be good enough to prevent hum from a
>> messy setup like mine? Some details are below.
>>
>> -------------------------
>>
>> In my situation the phone extension wires and the mains wires will
>> run close to one other.
>>
>> There will be about four or five additional extension phone
>> sockets.
>>
>> And in some phone sockets there will be a loose extension lead of
>> approx 3 metres which will be almost ontop of curled mains flex
>>

>
> It is quite difficult to induce hum into telephone wiring.
> Use twisted pair cabling rather than the flat ready-made
> extension cables.