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Old 17th August 2008, 07:17 PM   #1
mcs is offline mcs  Denmark
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Default Unknown tube logo

I have just bought some 6N3P tubes. I don't recognise the logo on them - the logo is this one:

Click the image to open in full size.

Does anybody recognise it?

The tubes were made in '89, are marked with cyrillic text and come with a Russian datasheet. The logo is not on this list of Russian logos, so perhaps they are not Russian?

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Mikkel C. Simonsen
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Old 17th August 2008, 08:40 PM   #2
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Perhaps the tubes are from the Ryazan plant. Smudge that logo, as shown in the chart, and what you provided is possible.
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Old 17th August 2008, 09:31 PM   #3
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I just bought some 6n3p's as well. Not sure what I'm going to do with them. Just got some to try them out.

May I ask what you are going to use them for?
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Old 17th August 2008, 09:57 PM   #4
mcs is offline mcs  Denmark
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Quote:
Originally posted by Eli Duttman
Perhaps the tubes are from the Ryazan plant. Smudge that logo, as shown in the chart, and what you provided is possible.
The logo isn't smudged - it looks like that on all the tubes and on the datasheet.


Quote:
Originally posted by Bas Horneman
I just bought some 6n3p's as well. Not sure what I'm going to do with them. Just got some to try them out.

May I ask what you are going to use them for?
I have used them for line stages, and I'm also experimenting with a phono stage I want to try them in. What brand are your 6N3Ps?

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Mikkel C. Simonsen
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Old 17th August 2008, 10:23 PM   #5
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Quote:
What brand are your 6N3Ps?
Have not received them yet. But they seem to be from the same factory. (datasheet shown in the auction)
http://cgi.ebay.com/ws/eBayISAPI.dll...MEWN:IT&ih=010
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Old 17th August 2008, 10:27 PM   #6
mcs is offline mcs  Denmark
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Quote:
Originally posted by Bas Horneman
Have not received them yet. But they seem to be from the same factory.
They probably are - most of my 6N3Ps are from Gintaras also

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Old 17th August 2008, 10:41 PM   #7
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Gintaras is a good man.

But I'd have to say I'm with Eli on this one. There is a striking resemblance between the logo you've shown and that of the Ryazan plant. They probably changed their logo a little bit for some reason.
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Old 17th August 2008, 10:55 PM   #8
mcs is offline mcs  Denmark
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It doesn't look like the Ryazan logo to me at all - it looks more like the Shuguang logo to me. But did Shuguang make tubes (with Russian datasheets) for the USSR market?

Click the image to open in full size.

Best regards,

Mikkel C. Simonsen
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Old 17th August 2008, 11:14 PM   #9
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Quote:
But did Shuguang make tubes (with Russian datasheets) for the USSR market?
That seems extremely unlikely to me. The Sino-Soviet relationship has always been one of rivalry and suspicion.

PS. Your pictures seem to have disappeared.
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Old 17th August 2008, 11:18 PM   #10
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I've mailed Gintaras to ask if he knows what factory they were made in.
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