[Amps] cheap glass vacuum tube

["Hsu" <Jbenson@sohu.com>]

I found a very cheap industrial vacuum tube($100 or so) ,Chinese named FU-605, 
it still  pruduce now.same as (Toshiba?) 6T51, simlat 7072, but mu=48.
   the vacuum should be better than 833A, and more powerful power(2.5KW@ 
50MHz,Va=4000V), would anyone
 had ever use it as Class AB1 RF amplifier?
     73! Hsu
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