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Re[2]: LF: Re: Unwanted LF radiation

To: [email protected]
Subject: Re[2]: LF: Re: Unwanted LF radiation
From: "John Rabson" <[email protected]>
Date: Tue, 14 Jun 2005 16:41:37 +0100
Delivery-date: Tue, 14 Jun 2005 16:43:16 +0100
Envelope-to: [email protected]
In-reply-to: <[email protected]>
References: <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
In the 1970s, copper was so expensive that aluminium was used in telephone 
cables.  Providing a reliable joint between the copper pair and an aluminium 
one was interesting.

John G3PAI

*********** REPLY SEPARATOR  ***********

On 13/06/2005 at 19:55 [email protected] wrote:

AND to add to it all ! I am not an ex-BT man (but as Alan NYK will attest

have worked within the system) It is not unknown for strange effects to be

manifest at points where the copper network changes into other
manifestations including different metallic elements as conductors and/or transformations to or from optical fibre etc.etc.
Try checking around street cabinets and large "manhole" covers emblazoned
with the logos of telecoms and utility companies (don't just look at
As the old maps used to say "there be dragons" !

Pat g4gvw

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