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uk.tech.digital-tv (Digital TV - General) (uk.tech.digital-tv) Discussion of all matters technical in origin related to the reception of digital television transmissions, be they via satellite, terrestrial or cable. Advertising is forbidden, with no exceptions. |
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#41
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Sylvain VAN DER WALDE wrote:
"Mark Carver" wrote in message Who's Benny Hill ? You're joking, of course. Of course I am, everybody knows he was an ITN newscaster. -- Mark Please replace invalid and invalid with gmx and net to reply. |
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#42
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charles wrote in
: I usually see Dave once a month at the "Network Meet". Say "hallo" - he was a good guvnor. mike mike ? mike ring - he was my boss at AP CAR (the dog kennel off the side of studio B) in the 60's. .....surely he couldn't ferget me... :-O mike |
#43
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"Kennedy McEwen" wrote in message
... In article , Prometheus writes In article , Dave Farrance writes As for shadowmasks, it always seemed to me that they were an "impossible" invention for that time period, with about a million perfect little holes aligned just so with the phosphor dots. IIRC The dots were laid down by a 'photo' process using the holes in the shadowmask. Yep, it was the making of all those millions of regular holes in each of the invar masks that amazed me - all the same size, shape and pitch and not a single one missing. Knowing Mullard, they probably relied on one skilled technician with a Black & Decker. ;-) The holes weren't the problem. It was aligning the dots on the faceplate so that each electron beam hit only its respective color. The first shadowmasks had just 150,000 holes and the dot pattern was laid down by teams of women using hand stencils. Each woman did so many dots then handed it to the next. Resolution gradually improved up to around 500,000 pixels at the time of public launch in 1953. Above that a photo process was necessary which allowed shadowmasks to have 1.5m holes. As far as I know Mullard colour tubes were straight copies of the RCA shadowmask design produced under license. They were abandoned in favour of the parent company Philips 20AX PIL tube around 1973. (kim) |
#44
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On Sat, 23 Dec 2006 09:26:19 +0000, Mark Carver
wrote: I spent a week in hospital in 1972. The children's ward I was in had a radiogram... Surely you took your toolkit with you that you'd had for your 8th birthday and you'd have had it in bits? |
#45
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Paul Ratcliffe wrote:
On Sat, 23 Dec 2006 09:26:19 +0000, Mark Carver wrote: I spent a week in hospital in 1972. The children's ward I was in had a radiogram... Surely you took your toolkit with you that you'd had for your 8th birthday and you'd have had it in bits? Ha ! The TV was in a bad state. It had a nice big phosphor burn in the middle of the screen presumably as a result of a past H *and* V scan failure. One of the nurses said it was because they didn't turn it off fast enough after it 'went wrong', she was right ! -- Mark Please replace invalid and invalid with gmx and net to reply. |
#46
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"charles" wrote in message
... Later -some shows like the Billy Cotton band show and the Black and White Minstrals were transmitted in 405 line colour, Don't think so. there were no colour studios big enough to mount such programmes. To the best of my knowledge, Billy Cotton did only 1 colour show - Show of the Week: The Cotton Club on BBC2 on 25/10/1968. The following week, SOTW was Masquerade, featuring the George Mitchell Singers without their minstrel make-up. Masquerade survives, The Cotton Club doesn't. Hope this helps, L |
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