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  #1  
Old 03-28-2015, 04:56 AM
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Gleb Gleb is offline
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Greetings from Russia!

Hi colleagues !
I got here a few days ago to ask a question, and I immediately got the answer, thank you members ! Even though Russian TVs are different, I hope it would be interesting to the community and we'll find a lot to share !

Gleb.
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Old 03-28-2015, 07:44 AM
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Cool ! ! Welcome aboard ! ! Good to have ya- !

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Old 03-28-2015, 07:54 AM
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Old 03-28-2015, 08:34 AM
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Welcome Gleb! I love your КВН-49 in your profile picture.
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Old 03-28-2015, 09:47 AM
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Welcome from Canada!

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Old 03-28-2015, 01:06 PM
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Thanks for the kind words guys !

Quote:
Originally Posted by vts1134 View Post
I love your КВН-49 in your profile picture
Yes, this cute TV is my favourite too. By the way, it has very curious design, even a sort of unique - the only TV in the world with a straight-amplifying tuner! I gonna write an article about it here.

Gleb

Last edited by Gleb; 03-28-2015 at 03:50 PM.
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Old 03-28-2015, 09:49 PM
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Welcome Gleb, to the forum for us "rare" types who eschew the common content delivery methods.

I really enjoy seeing how non-US sets are built and the circuits used.
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Old 03-28-2015, 10:09 PM
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Sandy G Sandy G is offline
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Nice to have ya, Pal ! Welcome from NE Tennessee ! TV & radio nutz have no nationalities, we're ALL happily CRAZY w/this stuff ! (grin)
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Old 03-28-2015, 10:39 PM
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Quote:
Originally Posted by Gleb View Post
it has very curious design, even a sort of unique - the only TV in the world with a straight-amplifying tuner! I gonna write an article about it here.
Like a TRF radio, with no down-conversion to an IF amplifier?
Looking forward to the article!

jr
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Old 03-29-2015, 08:36 AM
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Old 03-29-2015, 10:13 PM
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Welcome Gleb!! Great to have you here!!
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Old 03-30-2015, 02:42 PM
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Welcome to the forum! I have quite a few examples of Soviet electronics, but a TV is just to heavy to bring back to Canada. I find it fascinating that the USSR was producing black and white tube chassis TVs well into the 80s, and look forward to photos!
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Old 03-31-2015, 05:05 AM
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Quote:
Originally Posted by maxhifi View Post
I find it fascinating that the USSR was producing black and white tube chassis TVs well into the 80s
Here really were some weird things. On the one hand, fully-semiconductor color TVs with aperture grille CRT in late 60s! On the other hand, B/W tube TVs were really being produced inertially up to mid 80s...
Of course, those late "tube" TVs were not chassis-designed tube monsters. They contained a vertical tin frame around a CRT holding a few PCB boards with some tubes poking out of them. The tubes were used in output stages only to simplify the circuits, and mainly for price-reducing reasons. For example, in 70s a good high-voltage flyback transistor in DO-3 package was valued notably higher than EL500 cheap as dust, so designers made no bones of using some tubes in inexpensive TVs. Sometimes it looked really crazy, for ex you could see a modern DIP-14 IC as a video detector/preamp and 6BM8-like tube in the output stage. Of course, in 80s tubes were completely ousted by cheap plastic transistors and special ICs.
I remember my grandparents bought one of those discounted vestigial TVs in 1987 to use it in their summer house. It really was very inexpensive, so they weren't afraid that somebody could steal it from the empty house in winter:

Attached Images
File Type: jpg %D1%87%D0%B0%D0%B9%D0%BA%D0%B02072.jpg (95.1 KB, 53 views)

Last edited by Gleb; 03-31-2015 at 10:00 AM.
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Old 04-01-2015, 10:29 AM
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I like the euro style TVs which expose the front edge of the CRT, instead of hiding it behind a shadow mask. I wonder if it would even be possible to get one of those to display an NTSC picture.
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  #15  
Old 04-01-2015, 07:36 PM
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Quote:
Originally Posted by maxhifi View Post
I like the euro style TVs which expose the front edge of the CRT, instead of hiding it behind a shadow mask. I wonder if it would even be possible to get one of those to display an NTSC picture.
A 'shadow mask' is an internal component found only in color CRTs....It is not an external mask or bezel like what you are thinking about.
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