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In the Forum: Melquiades Amplifier
In the Thread: Gas voltage reference 0A2 tubes.
Post Subject: Re: Help to identify 0A2 tube.Posted by Jack 14 on: 9/8/2005

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Hi Dirma,

Unless you can prove me something else: the ones I have (0C2s and 0B2s) are printed "Made in USSR" very clearly.

I doubt that Canadian General Electric, or Sylvania, put this lettering on the tubes to conceal another origin, especially in the years before the Glasnost (not speaking of the Berlin Wall fall): that was not very popular around at the time. It was in fact more easy for them to re-print these ones as "Made in England" like the ones in the Romy's photograph. On the other hand, the stem (the molded glass part that hold the pins) is clearly Svetlana-made, so why not the whole tube ?

I believe those military-grade VR tubes to have been bought from the former Soviet Union by the british firm Zaerix (like a lot of other Soviet "bottles" during the '70s) and re-sold the world over, which can also explain the false "Made in England" reprint of the Romy's ones.
All the straight-sided 6L6GCs sold by Sylvania in Canada in the '70 were of Soviet origin also, but stamped "Made in England" !! I have understand the truth only when I have seen the first Zaerix "Made in USSR"... It also explain why my Fender 100 Bass Amp blew them up so easily also, but this is another story).

About the fact that you've never see those VR tubes before, let's say that the average american tube afficionado have never (and have almost no chance to) hold a Bendix Red Bank tube in his hands, or even a Tung-Sol 6900, despite that every US ICBM used one at some time. Maybe it is similar for you in Russia: does the 6C33C-Bs been originally used in Soviet civilian equipment, for example ?

LAST UPDATE: I think I found the real Romy's tubes ID (and mine too, by the same research).

Go to http://www.russiantubes.com/tubes.php?r=2

and select SG13P.  Compare it with the specs/dimensions of the SG1P...

Can it be that ??

Regards,

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