Albert's Attic Gallery
BBC Engineering Information Sheet 5001:
The BBC's Future Satellite Broadcasting Services (1984)
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a full size image click once on the appropriate thumbnail.
In
1977 the Geneva World Broadcasting Satellite Administrative Radio
Conference (WARC '77) established, it was thought, the shape of
satellite TV in Europe and beyond. At the time their plans seemed
far-sighted and futuristic. Now they seem absurdly limited, with
each country having a total allocation of only five channels.
The European nations each started to consider how they would make
use of this allocation, and in March 1982 the UK Government approved
in principle a two channel satellite TV service.
A year later the BBC published an Engineering Information Sheet
giving technical details of the UK satellite television system
that would, it was supposed, commence in 1986. Although the document
is mainly concerned with technicalities, reading it twenty years
later is a rather depressing and thought-provoking experience
for anyone who feels, as I do, that the history of UK television
broadcasting since the mid-1980s has been largely one of opportunist
free enterprise riding roughshod over the wider public interest.
Different governments have, at the least, simply allowed this
to happen. Things could have been so different, and so much better.
The Information Sheet starts with an explanation of the whole
concept of satellite broadcasting, and then goes on to give details
of the proposed service. There were to be two channels, DBS1 and
DBS2. DBS1 was to be a film channel. DBS2 sounds, if you read
between the lines, like a cross between UK Gold and Sky Sport
3. Both channels would have digital stereo.
At the receiving end, a 'parabolic aerial' of 2 to 3 ft in diameter
would be required. This would have to be fixed rigidly, because
it was more directional than a normal aerial. Indoors, a 'converter'
would be required, although very soon TV sets would appear that
would receive the satellite signals directly. The cost of the
'aerial' and 'converter' would be £400, plus installation.
Transmissions would not be in PAL but in MAC (see footnote). This
would provide better picture quality on a TV set or monitor with
RGB input. There would probably be a monthly charge for the two
channels, or they might be 'pay per view'. If necessary transmissions
would be 'scrambled'.
During the spring and autumn equinoxes the satellite would be
in shadow, so the solar cells would not provide power and transmissions
would be interrupted for up to 72 minutes. This wouldn't be a
problem, however, because it would occur after midnight when the
channels would be shut down anyway!
The transmission details - orbital position, frequencies, polarisation,
and so forth - are, of course, the WARC '77 allocations that became
familiar to us during British Satellite Broadcasting's brief existence.
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