Hello,

a very rare Sovjet tv set, the Leningrad T1, can be seen on

http://www.molotok.ru/item394311376_leningrad_t_1_redchajshij_televizor_ 1946_goda.html

Only three surviving sets of the T1 are known. This web page is worth a look for its excellent photos.

Kind regards,
Eckhard

Hi Eckhard,
thanks for the link. :)

Wow...Wonder if it still works, or could be made to work...Muchas Gracias for the link, Eckhard...

Warning! Silly cold war era remark follows:

Is it a color TV, but with only red and no green or blue? :D So the viewer would only see the red (communist) viewpoint? :D

Warning! Silly cold war era remark follows:

Is it a color TV, but with only red and no green or blue? :D So the viewer would only see the red (communist) viewpoint? :D

Things are no longer red there, since the fall of the Soviet Union. Because the set was never made to handle green or blue, THAT's why there is no picture at all on the screen... nor red, no green, no blue = no pic, right?
:D

Saved some pics to our site just in case.



Carl

I especially like the word above the antenna terminals, literally F-EE-D-E-R.

No matter what, that is one sweet-looking find! :thmbsp: Very clean, and looks as if it could easily be made to play--assuming the kine is OK. I wonder what standard they used over there at the time, and how much it would take to tinker it to operate as NTSC.... :scratch2:

(Edit: A source offers that it operated on the French SECAM standard.)

It looks very American on the inside, all octal tubes. I wonder if it is a partial copy of a US prewar set?

Yes, there is a lot of American technology in it. It is based on American tv sets which were exported during WWII. The original television standard is the RCA 343 line standard with 25 frames, which was changed to 625 lines in March 1946. IMHO the picture tube is a 7" round crt 18ЛK15.

Kind regards,
Eckhard

"....1946! How's that fit in with your post-war Commie Conspirascy?"

Gen. Jack D. Ripper:smoke:

"....1946! How's that fit in with your post-war Commie Conspirascy?" Gen. Jack D. Ripper:smoke:

Look at the photos: most of the resistors are German. Rosenthaler and Siemens parts. :D And the micas are British. The picture tube is a replacement. The original crt had no ion trap.

This is true conspiracy... :yes:

The chassis looks extraordinarily clean, and look at the size of that power transformer! what Hz did the Russians use then/now?

The chassis looks extraordinarily clean, and look at the size of that power transformer! what Hz did the Russians use then/now?

The Sovjets used 220 Volts, 50 Hz. Due to the lack of suitable television valves, they used different filaments voltages. That's the reason for the large mains transformer. The horizontal frequency is 8,575 Hz. Video bandwidth is appr. 1 to 1.5 MHz.

EHT is generated in the line output circuit, but there is no damper.

- Eckhard

No matter what, that is one sweet-looking find! :thmbsp: Very clean, and looks as if it could easily be made to play--assuming the kine is OK. I wonder what standard they used over there at the time, and how much it would take to tinker it to operate as NTSC.... :scratch2:

(Edit: A source offers that it operated on the French SECAM standard.)

Just a note that SECAM was a color transmission standard developed
from the late fifties, thus it is not relevant to this 1946 receiver. Of
course the matter of compatibility of early Soviet TV sets with
other European systems remains open.

Awesome! Thanks for sharing! It looks like it still or could work, very nice!

The Sovjets used 220 Volts, 50 Hz. Due to the lack of suitable television valves, they used different filaments voltages. That's the reason for the large mains transformer. The horizontal frequency is 8,575 Hz. Video bandwidth is appr. 1 to 1.5 MHz.

EHT is generated in the line output circuit, but there is no damper.

- Eckhard

The double diode with both plates tied together (at the bottom right
of the schematic) looks like a damper to me...

The double diode with both plates tied together (at the bottom right
of the schematic) looks like a damper to me...

I have seen that. But I am not really sure about it. The damper usually is connected with the primary coil, the other end is connected with the plate of the line output tube. This "damper" here has an own coil. It looks like a limiter. But the function of the damper is also to increase the plate voltage of the line output tube.

I have taken a look at the schematics for the Sovjet peoples tv set, the KVN-49. There is absolutely no damper and no double diode.

Kind regards,
Eckhard

In Romania you can find a "KVN"-49 at Iashi.

That's an American style damper circuit.

In order to get things to work in the horizontal, you pretty much need a damper.