#46
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#47
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I had a Sun Microsystems 21" monitor with a Trinitron. It was one of the best monitors I have ever seen. It had better resolution than the first generation flat screen computer monitors by far. It had more convergence adjustments than a 21" round CRT TV. It was a power hog and weighed 65 lbs. I still miss it.
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#48
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Around what year did these emerge?
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#49
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I really don't remember. Would have to do some research.
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#50
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Then there were the consumer market (circa 2002) full HD resolution Super-Fine-Pitch trinitrons that had perhaps the highest resolution (dot pitch wise) tri-color CRTs ever made.
__________________
Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
Audiokarma |
#51
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Is the Tek 650HR the fine pitch version?
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#52
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looking at the illustrations:
http://www.recycledgoods.com/tektron...tor-19869.html I think this may be the Tek "high-res" one, but I now believe I was confusing this with another brand of monitor that had a larger tube that filled the rack width, so all controls were at the bottom instead of the sides. The stripes appear to be visible in the closeup, and my guess is they are finer than the regular tube, but still not as fine as you would really like. |
#53
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I think they caught a lot of flak in the 1970s for the original versions. |
#54
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The Coronation took place in June 1953 ... so no NTSC standard let alone a 405 line version was in place.
The experimental system was apparently a field sequential system. The set is almost certainly a projection set or the image is a slide lit internally from behind. The later 405 line NTSC tests came about as a result of pressure from ITV which wanted colour for commercial tv. Sir Lew Grade apparently believed colour would mean advertisers would pay more. The BBC was not too keen but did carry out tests but was more interested in waiting for the 625 line system which first broadcast on UHF in 1962 as BBC2. Colour arriving after a long debate, using PAL, on July 1 1967 for Wimbledon, although tests had been carried out in 1966. Ironically 405 line NTSC and 625 PAL would have looked pretty similar given the actual displays ie resolved lines on the sets of the day. Which was part of the reason BBC did not want 405 line colour.
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____________________________ ........RGBRGBRGB ...colour my world |
#55
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JUST NOTICED THIS RECENT POST:
"[QUOTE=ceebee23;3171224]The Coronation took place in June 1953 ... so no NTSC standard let alone a 405 line version was in place. The experimental system was apparently a field sequential system." TRUE. IT WAS AN EXPERIMENTAL FIELD SEQUENTIAL SYSTEM. IN FACT CHROMATIC LABORATORIES PITCHED THE FACT AT THE FCC TRIALS THAT THE CHROMATRON WOULD NOT ONLY WORK WITH THE RCA THREE GUN SYSTEM, IT WOULD WORK WITH THE CBS FIELD SEQUENTIAL SYSTEM, THEREBY ELIMINATING THE CUMBERSOME SPINNING COLOR WHEEL OR DRUM. "The set is almost certainly a projection set or the image is a slide lit internally from behind." POSSIBLY, OR THE PHOTO WAS AN EXPERIMENTAL CHROMATRON FIELD SEQUENTIAL COLOR TELEVISION SET UP AS DESCRIBED ABOVE BY THE VARIOUS POSTERS ON THIS THREAD.
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Personal website dedicated to Vintage Television https://visions4netjournal.com |
Audiokarma |
#56
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Would a Chromatrom screen be as flat as it appears in the image.. It would be exciting to think it was a Chromatron!
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____________________________ ........RGBRGBRGB ...colour my world |
#57
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Here is a spec sheet of the 1953 version of the color Chromatron courtesy of ETF. Notice how square and flat it looks. http://www.visions4.net/journal/wp-c...ds/image11.jpg
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Personal website dedicated to Vintage Television https://visions4netjournal.com |
#58
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A perspective transform and overlay indicates that the Chromatron on the spec sheet would not fit that cabinet.
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#59
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Couple of things. That overlay may not be to scale. The spec sheet states the tube is 221/2 inches. There are at least two sources that say the color Chromatron sets used in the chrildrens hospital were 20 inches. The Chromatron was manufactured in different sizes.
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Personal website dedicated to Vintage Television https://visions4netjournal.com |
#60
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Not to mention that screen surround probably shrank as development progressed.
__________________
Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
Audiokarma |
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