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Message-ID: <1Gs$LAAhOzY6EwnC@pickmere.demon.co.uk>
Date: Mon, 15 Jan 2001 17:30:09 +0000
To: rsgb_lf_group@blacksheep.org
From: "M.J.Powell" <mike@pickmere.demon.co.uk>
Subject: Re: LF: re Rugby site
References: <002301c07c2c$b7247940$fb9601d5@default>
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In message <002301c07c2c$b7247940$fb9601d5@default>, Alan Melia
<Alan.Melia@btinternet.com> writes
>Hi All, the 2 inch 'water-pipe' coil that Andy refers to would have been
>installed in the mid 1960s when the transmission was 'phase stabilised' (at
>least thats what the guys who were responsible for it at PO Dollis Hill
>called it) I have never seen that bit. The TX has also been updated at least
>once since those days. I suppose that must have been the time it moved to
>data transmission rather than morse.
>
>I think you may find that the poles and wires across the road are what, I
>believe, is known as a T/R cell......but just perhaps I shouldn't know about
>things like that!

The only T/R Cell I know of was/is used in radar for connecting the Tx
and Rx to the same aerial. Is that what you mean?
AFAIK Subs don't send on VLF.
>
>I didn't know about the Caernarfon site, Mike but I agree with you,
>technical artifacts of this vintage are easily lost. They are not yet old
>enough to be historical to most people. I suggest you drop a message to the
>Welsh Heritage Secretary....I would think in the present climate you might
>get a sympathetic hearing. 1938 closure might not be as silly as it sounds,
>it may have been regarded as too vulnerable to a naval (submarine)
>artilliary attack. The RAF Experimental Wing was moved from my next door
>airfield to Boscombe Down, in about the same year.

Good Idea. Although the last time I complained about the poor state of a
national heritage they promptly closed it! (Stonehenge)

I did most of my NS at Boscombe down!

73

Mike
-- 
M.J.Powell