NOS Teletekst Technische Proefuitzending
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OS is the broadcaster in the Netherlands.
Occasionally, due to enhanced tropospheric propagation, signals
from the continent are received in the United Kingdom, and NOS is
usually represented. These photographs were taken on the evening of
28 November 1979, and were the first DX (long distance) teletext
signals resolved on the Forgestone colour receiver fitted with the
Wireless World teletext decoder. Nederland 1 was received on
channels E29, E39, E50 and a Band III channel, and Nederland 2 on
E27, E32 and E54. The photos are all of Nederland 2.
Nowadays continental teletext transmissions use a slightly
different character set for each language which provides for
accented characters, but on these test transmissions NOS appear to
have used the British set and ignored accents. As the WW decoder
only had the standard characters, accented ones would have appeared
as fractions and odd punctuation marks.
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 he newsflash demonstration on the Nederland
2 ident caption shows that the teletext could be resolved on quite
a noisy signal.
The double-height header row with its red and blue background
were nothing to do with NOS - it was just the way I'd modified the
decoder. I thought it looked quite snazzy at the time, but the
clock eventually became 'burned in' on the screen in the same way
that the apple in the corner of my computer screen has.
The decoder displayed continuously rotating page numbers, so the
ones shown in these headers are just those that happened to be
transmitted at the time of the photo, and don't relate to the
displayed page.
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Pembers'
Ponderings
Compiled by Alan Pemberton
Sheffield, South Yorkshire, England
Email me
