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DIRECT TELEVISION from ALEXANDRA PALACE
. Here is the News . . . |
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On one occasion the news set in the studio had two phones on the desk. One was the normal
PBX phone and the other was a direct line to the USA.When it came to that item, the
newsreader picked up the wrong phone, saying "Is that New York?" whereupon the
PBX operator answered "Business or Personal?" to the very startled
newsreader. |
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Silence please! |
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Cablefilm The way to send pictures down the cable was to scan each film frame very slowly and send the resulting signal over the cable, thus the bandwidth needed was only from 0.5 to 5.6kHz which the cable could carry. I think it was about 30 seconds of black & white film would take around half an hour by this method. At the receiving end the pictures would be displayed on a cathode ray tube which had a long delay time and then photographed on another film. The system was reversible so that pictures could be sent in the other direction as required. The sound was another matter - to get synchronisation between picture and sound the recording at one end had to be copied at the exact same speed at the other. To achieve this, we at AP had recorded several minutes of tone at 3kHz on 35mm magnetic film, and sent half of this to NBC in New York, keeping the other half of the film at AP. In our film transfer suite at AP one of the 35mm sepmag recorders was modified to run on a 50Hz tone source the frequency of which could be accurately altered over a small range. The 3kHz tone films were attached to the beginning of the sound reels at both sides of the Atlantic. By voice message over the cable, one side would tell the other to start and the speed of the AP machine would be adjusted by accurately comparing the local and cable-received tone with a special measuring device (a "Flutter Meter"), which is a device which can measure to a fine degree small variations in a recorded frequency of 3kHz. By this means it was possible to match accurately the speed of
the one running in New York, at least over the time span of the short
length of the news film. When the tone ended, the
receiving side would switch over from replay to record, and copy the
sound of the
news clip.
NO silence, please....
Unfortunately, I have no recollection at all of the actual items that
were sent or received over the cable. What I do remember was that at
the weekends there was a compilation of news events and, although by
that time the actual film would have arrived from USA, the compilation
still used the inferior quality cablefilm!
Cablefilm - a Postscript
17/18 June 1959
26 June 1959 To Edit - or not.... One summer during their holidays some university students were employed as editing assistants. One of them was heard to remark on seeing one of the News film editors editing a story on 16mm film, "If you join it up at the end, why cut it in the first place?" The dubbing mixer at AP at this time was John Colomb but when he was on leave a relief mixer would take his place for the week, as arranged by the recording staff office at Ealing. On one occasion Bob Saunders was doing relief work; I called him "Holiday Relieving Fellow" after a joke in a recent Peter Sellers tv show. For some reason the telephone line in the mixer room appeared on the jackfield and one day I quietly disconnected the line, picked up the phone and pretended to phone the office in Ealing. When the secretary "answered" I said "Who is this mixer you've sent to us this week? What? That is no mixer, that is Bob Saunders? Oh no, I don't wish to know that!" and put the phone down. Poor Bob was agitatingly jumping up and down saying "No no no, you mustn't, don't say that!". He calmed down when he realised I had been speaking on a dead line.... |
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First published 1999 Second edition 2002/2003..... Page created by Arthur Dungate