[Amps] GU-81M data?

[Ian White GM3SEK]

Does anyone have DC operating conditions for the Russian GU-81M pentode 
in class AB1 or AB2, please?

The only data I can find are...

http://www.kvindesland.no/yl2qm/tubes/gu81m.htm
Vg2 = 600V, Vg1 = ?? (probably smaller than -100V)

http://www.cqham.ru/HiFi_Contester_EX8A.htm
Vg2 = 800V and Vg1 = -220V. Both values seem very large. If Vg2 was 
lower, then Vg1 could be smaller too.



-- 

73 from Ian GM3SEK
http://www.ifwtech.co.uk/g3sek