Japanese roundie #2
 

Hi evryone !

Here is Japanese roundie made by HITACHI Co. LTD.:banana:

Wow, looks like a quality set! Dual anode caps, nice cabinet

Tell us more!

Alright!

look at that! Huge power tranny too! Hope it will one day be working again.

Do those sets use NTSC 525 line, or something different?

Wow. Nice set! Does that use an RCA picture tube, or was Hitachi making round color tubes then too? I know that some of the early British color sets used RCA tubes. When did Japan get color?

-Ian

Awesome!

US and Japanese NTSC are the same, except for a slightly different setup. Basically, you'd notice a slight black level shift, but most wouldn't even notice that, and you can adjust around it. The channel frequencies might not be the same, though...


I wonder if it's an RCA clone, or if it's a homegrown chassis. Schematic, anyone?

What a cool set! Obviously you dont see these too often.
-Tony

I see no shield around the crt, and what appear to be carbon pots on the convergence panel. A very interesting tv. RCA clone, Japanese style?!? Love to see a schematic. Hope to see screen shots!
Kevin

Some of their TV channels are in the middle to high end of the American FM broadcast radio band. Their FM radio band goes between 76 to 92MHz. With today's cable ready sets that's not a big deal...

The dual anode and Japan's color tv startup date of 1960, might suggest a 21CYp22 picture tube.
Here's a link to some history of color tv in Japan: Regular Color TV Broadcasts, Tokyo Olympic Games
http://www.nhk.or.jp/strl/aboutstrl/...p10/index.html

-Steve D.

...

Assuming it's a 21 inch tube, that is a really large cabinet for a Japanese set. Interesting!

If i remember correctly, Japanese electronics manufacturers were producing multiple sizes of color CRT's as early as 1961.
They ranged from 18"??- 21".

That is an awesome set. It's really neat to see how engineers in other countries approached NTSC set design.

Several other Japanese color tv entries from the early 1960's. Courtesy Tom Genova's TV History site.

1960-Sharp-CV2101-ColorTV.JPG
Address:http://www.tvhistory.tv/1960-Sharp-CV2101-ColorTV.JPG

1962-Japanese-TV-sets5.JPG
Address:http://www.tvhistory.tv/1962-Japanese-TV-sets5.JPG

And this interesting color tv page with pictures from Toshiba:
Toshiba Science Museum : The First Japanese-made Color Television Set
Address:http://museum.toshiba.co.jp/history/1goki/1958tv.html

That is definately an RCA 21CYP22.
Japs didn't make their own color tubes in 1960. They were pumping out transistor radios like crazy, then Sony made a little B&W fully transistorized TV set. The beginning of the End.
Most all color Jap sets used USA picture tubes till about 1967.

http://www.tvhistory.tv/1962-Japanese-TV-sets5.JPG
17" rectangular color tube in 1962, wow.

All the picture tubes in the above sets were made in the USA.
Jap made tubes except for the trinitron were not common till the 70's when they started importing 19" and below completed color tv sets. Any thing over 19" even if it was a Jap set had a USA made tube in it till about the late 70's, early 80's.
The 27" Sony Trinitron tube was made and assembled in the USA of USA parts except for the electron gun.
Later on Jap tubes showed up in more sets up to 25".
The poorest quality tubes were made in Tawain. They would lose vacuum after 2 years from the poorly made frit material sealing the panel and funnel.
Tubes made in the netherlands by Phillips were also junk.
The American made tube has never been surpassed in regard to quality, durability, and very long service life.

The 14" set (bw, looks like) sure copies the old 630ts design. Unique.

I remember some discussions here about the 17" Japanese color sets and how they were sold by Sears. Large neck crt like a roundie? I don't believe that particular one could have been sourced from the US, or else our manufacturers would have been all over it.

I worked next door to a Sears catalog store from 1963 to 1970. I remember when they got the first 17" color set in. It looked funny on long legs but had a good picture.

That tube was a 17ENP22, made in the USA, glass componets were from Corning Glass. By today's standards, it would be considered stupid.
back then, that tube was also used in practically every Conrac (brand) Televion Station monitor.
By the time the Japs made a few of those tubes, they were obsolete.

Hi,

5 will get ya 10 that this roundie has a CTC series clone chassis in it! This TV is veddy American inspired and sure has American components in it.

---

Yeah, we had one of those funky Sears color sets way, way back.. It was absolute crap...About a year-18 months later my dad got one of the 1st Porta-Colors, & it rarely ever gave any trouble.

Not in my experience... Philips CRTs made in the 60s-80s time frame are almost immune from wear, i have yet to find a set with a bad Philips CRT, even the extremely high hour ones with severe screen burn i took out of old railway monitors still had strong emission from all 3 guns!

ebert, did you (do you?) work in the crt business?

It certainly looks like a Japanese clone of the RCA CTC7 WITH a 21CYP22. Patterned after it with all tubes in the same location. This would have to be an extremely rare set because people at that time would have a hard time buying any Japanese products as they were considered cheap copies and inferior. Also having a brand name like "Hitachi" or otherwise in your living room in this country would "brand" you back then even up to the late '60's. I remember acquiring a Hitachi about that time and finally sold it. It was a 19" rectangular console and had a beautiful color picture!

Interesting discussion, but these sets are from the domestic Japanese
market, and I don't believe that U.S. made sets were competing with
them, with the well known Japanese nationalism. And as mentioned,
the channel frequencies would not be directly compatible.

Ain't that a "Hitachi" CT-150 with a 21CYP22A picture tube?
It's very simillar to this one: http://audiokarma.org/forums/attachm...0&d=1208504122

Here is the topic: http://audiokarma.org/forums/showthread.php?t=22009
Where did you spot the tv set?

what do you mean?

That cabinet reminds me a lot of the Philips K4.

Second that.