Re: ADSL Interference from electricity supply systems

Steve B wrote:
"John Livingston" <null@xxxxxxxxxx> wrote in message
news:0IWdnYF8KLNpQmLa4p2dnAA@xxxxxxxxx
kraftee wrote:


You'd be suprised as you could be the only one. Had recent
experience with a SKY Box on a stopped line going broadband & it
only caused problems for one out of 10 users on the same pole &
didn't affect anyone else on the route back to the PCP.

The problem for you, is that ADSL is not a protected service so
even if it is the sub station causing you grieve I very much
doubt if anything will be directly done about it, other than
changing some of your routeing, if at all possible.

You're right of course - but its become a bit of an obsession !
The fault is below the point at which I could reasonably report
it, but it's become a bit of a detective mystery.

I should get out more .....

John

It does sound a bit like medium wave RF pickup, the phone line
acting as an aerial, MW signals get stronger as dark approaches, in
cyclical 'waves' of a few minutes. If you are old enough to
remember Radio Luxembourg fading in/out then that's the same thing.
Phone lines, especially overhead ones make a good MW aerial. The
balanced pair line in theory helps to reject RF pickup, but any
imbalancing of the line, say by water making contact with only one
half, and RF signal level at your end increases. Placing a MW
radio by your master socket, preferably with a couple of turns of
phone line (pre-any microfilters) wrapped around it, with the
router switched off, might tell you something if the signal gets
boosted and fades in/out. Try it on several very weak stations.

I agree with what you're saying Steve (you don't live in south
Nottinghamshire do you????) but you'll get AM modulated pick up no
matter what, even on a 100% balanced pair (been there, seen it, got
the teeshirt, found it was to small so I threw it back at my line
mananger). You'll even get it after filters as well as before.
Problem is that AM radios are prone to pick up radio signals so what
you are describing isn't a proof one way or the other (for RF pickup).


.

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