[Hallicrafters] Tube question for old-timers.

[Art Lebermann]

Skip.....

For more info, one of my favorite reference books is "70 Years of Radio
Tubes and Valves", by John W. Stokes (2nd edition, 1997, Pub. by Sonoran
Publishing, LLC)

73,
Art Lebermann, W6REQ



> [Original Message]
> From: Waldo Magnuson <magnuson at mac.com>
> To: <Hallicrafters at mailman.qth.net>
> Cc: Waldo Magnuson <magnuson at mac.com>
> Date: 3/23/2005 4:04:27 PM
> Subject: [Hallicrafters] Tube question for old-timers.
>
> >     My question to the old-timers is:  Were these improvements to the 
> same tubes, or just an envelope change, and was there a naming scheme 
> used for the changes or upgrades ("S" seems to have been used for some 
> of the early transitions).
>     Thanks.
> 73,  Skip Magnuson W7WGM
>
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