[Amps] Question re GU-74B grid current

[Val]

Yes Peter,

Please find attached a scan of the GU74B page of the official Svetlana
product cathalog for 2004.

73, Val LZ1VB

----- Original Message ----- 
From: "Peter Voelpel" <df3kv at t-online.de>
To: <amps at contesting.com>
Sent: Wednesday, October 24, 2012 1:43 AM
Subject: Re: [Amps] Question re GU-74B grid current


>
> Corrected by Svetlana?
> Please send a copy of the revised data sheet of the GU74b.
>
> 73
> Peter, DJ7WW
>
> -----Original Message-----
> From: Amps [mailto:amps-bounces at contesting.com] On Behalf Of Val
>
> The 800W labeling of GU74B wasn't fraudent, but a pretty fair. If this 
> tube
> was designed by EIMAC, or other western company it would have been
> undoubtedly labeled 4CX800. Compare its size, grid and screen  to  4CX600
> and 4CX1000.
>
> Underrating of GU74B proceeded from the political and economic system in
> Russia.
>
> It wasn't market driven, there was no competition, the price of the tube 
> and
> the price per watt weren't of big importance. However it was really
> dangerous for the designers if the tube failed to meet its specifications.
> That's why they rather insured their lives by rating  the 800 watts tube 
> at
> 600 watts.
>
> This was corrected only 25 years later.
>
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