Another in the 832 / 829B "family" is the 815, another RF (and audio) dual power tube, but with an octal base rather than the big Septar base. The two plate caps are angled off the top of dome, giving it a vaguely "satanic" look... or perhaps Mickey Mouse with trimmed ears Yellow_Light_Colorz_PDT_02
In the 1949 ARRL Handbook, the tube section in the back indicates that this tube can also be used as a class AB2 PP audio power tube, with a fair amount of power capability , so it isn't strictly "Class C RF only" (not that the 832 and 928B can't work on audio, they do so very well, in spite of the original design intentions).
Data Sheet Here:
http://www.mif.pg.gda.pl/homepages/fran ... /8/815.pdf
Go with the "CCS" rationgs, Continuous Commercial Service, that is the more "conservative" ratings and the tube will have a much longer service life.
"ICAS" is Intermittent Commercial and Amateur Service, which is for relatively short duration transmissions (or screamin' guitar licks). :o
I'm not sure of the NOS availability of these, or if The Russians have their own version of this one.
/ed B in NH