[UK-CONTEST] OT- Railway electrification

[John Lemay]

Clive

I lived next to the main line from London to Ipswich for years. The qrm was
quite strong as the train passed but as you have guessed, it is transient
and gone very quickly. Without a train nearby, I had no qrm from the
overhead line.

Regards

John G4ZTR

-----Original Message-----
From: uk-contest-bounces at contesting.com
[mailto:uk-contest-bounces at contesting.com] On Behalf Of Clive Whelan
Sent: 24 July 2009 12:47
To: UK Contest Reflector
Subject: [UK-CONTEST] OT- Railway electrification

Please forgive the OT subject, but I know what a wide expertise resides 
here. Off-list replies would be indicated.

You may have heard about the electrification of the Paddington/Swansea 
line in the recent news. Well I live within yards of that line in the 
old station master's house in the local village ( pre-Beeching!), so I 
will almost certainly have to move. I did consider this possibility when 
moving here about 9 years ago, but though it would never happen on 
economic grounds if no other- how wrong I was? Of course nobody chooses 
to live alongside a railway line , but being an impecuniously challenged 
person, I would not otherwise been able to afford the property! In 
reality the environment has not proved any problem at all.

Even though a move of QTH will almost certainly prove imperative, I 
don't have any direct personal experience of such things, and wonder if 
anyone here does? I don't even know what the voltage used is, but 
imagine it must be several kV to minimise I- squared-R losses? Is the 
QRM transient ( like the audio) or is it propagated along the cables. My 
best guess is that it must be?

Any info appreciated.

73


Clive
GW3NJW
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