The elusive Indextron

[etype2]

[QUOTE=Scott_Est;3084333]No underlined links on my screen and I don't use any Adblock or similar programs.

I want to say once more big thanks to Jhalphen, who sent the full service manual for CKC021 viewfinder.

To fully analyse the schematics I need to print it out and glue these sheets together. But at first glance it is indeed quite strange system for me. This north-eastern corner in Europe we had 3-gun color-CRTs from the beginning of colour television introduction. I read that maybe England and other western countries had indexing-type TVs, but not sure about it. Though, one Russian portable color-TV set has one-beam electron gun, but creating colours to screen is done by two charged thin-wire layers between screen and the gun, that type of CRT is called chromatron.

I won't do anything to VF before I fully understand its "soul" and also I purchased a old and faulty, but reliable soviet era oscilloscope to make thing a lot easier. (Fault - scope has no horizontal deflection, but it easy to fix this.)

And have two more questions.

First: whitch is newer/modern VF, CKC021 or CKC030?
And second: what type of CRT is used in Panasonic CT-101A? Size is same 1,5 inch color CRT, but other information is controversial. One source said that it has 3 beam gun, other - 1 beam indextron(?).

Thanks[/QUOTE

Just a guess, numerical order would suggest the old and new.

The photo of the Panasonic CT-101A is from my website. I am the author of Visions4.net. The Panasonic CT-101 is a 3 gun, tri phosphor precision in line CRT. Source CQ-TV 202 May, 2003.

I am curious about the Russian portable Chromatron you refer to. Do you have photos or more information? I was not aware of such a set. I have a Sony 7 inch Chromatron model KV 7010U and two Sony KVX 370 Indextrons.

To the best of my knowledge, a annotated history: Sony produced the first ever commercial for the home Chromatron in 1965. It was a 19 inch, 3 gun Chromatron, model 19C 70, marketed only in Japan. In 1968, Sony marketed a 7 inch Chromatron model KV 7010U in the U.S. In 1988, Sony marketed the first stand alone, direct view Indextron television receiver, the KVX 370. (Sony also uses a 5.25 Indextron CRT in a projection television in 1984)

There is a rumor that a Japanese company Yaou, produced a 8 inch Chromatron as early as 1963, but so far have seen no evidence that happened.

Update: Jerome Halphin provided me with information from his recent visit to the NHK Museum in Toyko. The Yaou became the GENERAL TELEVISION COLORNET GTC-9 and indeed was marketed in Japan about 1965-66.

See PAGE FIVE TRINITRON on my website and scroll down to 1965. Photos and a report from Jerome.
http://www.visions4.net/journal/time...e-a/page-five/