Picture tubes--rate them...

[dieseljeep]

Originally Posted by Alastair E

Ah--Reading That takes me back a bit! Years ago I had an American built for the UK market a set called a 'Teleton' It was a 12 or 14" set with a delta type CRT and full of valves although it was actually a hybrid set, with a modified NTSC to sorta simple PAL decoder--Had horrible colour rendering too
(I think these sets gave the UK based TV Trade joke--Never Twice Same Colour--NTSC....!)

--I have no idea who actually made the set, but that had one of those horrible unipotential CRT's that were popular in the 70's no focus-control-The CRT was tired and dark with terrible focus when I had it, even re-juvenating didnt help much....

There were a few UK made and Japanese sets that used them too, Horrible focus on 'em.

I did actually modify an Hitachi set that used a unipot CRT and fitted a Mullard A56-120X, a 22" Delta gun high-focus tube and IMO probably the best European CRT ever made. The picture difference was astounding!
--I took a HV diode from input to tripler and used a Grundig 'Metrosyl' focus-control, Worked brilliantly.

Sure there's an American equivalent to the A56-120X with a number like 560HWB22,--or summit but forget the actual number--I do remember the '560' and the '22' but forget the important type letters....

I would like to see a picture of the U.S. built set with the pseudo PAL decoder.
Maybe it was a Japanese firm, that wanted a place in the European, British market. Japan uses a form of NTSC.
The Kuba Porta-color that everyone refers to, has no resemblance to the U.S. model, outside of the cabinet, CRT, yoke, convergence assembly and flyback transformer.
BTW, that's what makes this hobby interesting.

[Alastair E]

Originally Posted by dieseljeep

I would like to see a picture of the U.S. built set with the pseudo PAL decoder.
Maybe it was a Japanese firm, that wanted a place in the European, British market. Japan uses a form of NTSC.
The Kuba Porta-color that everyone refers to, has no resemblance to the U.S. model, outside of the cabinet, CRT, yoke, convergence assembly and flyback transformer.
BTW, that's what makes this hobby interesting.

Sadly, My Teleton is long gone, but here is a thread on a UK forum of the same model set, there's a PDF link that explains the weird decoder they had....

http://www.vintage-radio.net/forum/s...ad.php?p=72223

Maybe I'm wrong about it being a USA made set--Possibly it was some Japanese or maybe even Chinese origin set!

--It just sorta Looked USA made to me at the time years ago, Steel cabinet etc,--, Has all USA designation valves, like 17JZ8, 3AT2 etc....

[dieseljeep]

Originally Posted by Alastair E

Sadly, My Teleton is long gone, but here is a thread on a UK forum of the same model set, there's a PDF link that explains the weird decoder they had....

http://www.vintage-radio.net/forum/s...ad.php?p=72223

Maybe I'm wrong about it being a USA made set--Possibly it was some Japanese or maybe even Chinese origin set!

--It just sorta Looked USA made to me at the time years ago, Steel cabinet etc,--, Has all USA designation valves, like 17JZ8, 3AT2 etc....

Many thanks for the information!
I was hoping that you could source this information.
The set was made by General of Japan, as stated in the theory text. They were never a big player in the U.S. market, although, I did work on a few of their products. The small screen B/W Philco, that Ford sold with the Mustang logo, was General sourced. Everyone here knows what that set is worth.
Regarding the valves, Panasonic was the only Japanese concern that used, what we would consider to be Euro-valves in their products. Motorola seemed to run a close second.