And let's not forget the 8008, MV tube which can be used in place of the 872A as well, dimensions permitting..
>I think I got it backwards. 4D32's are the tetrode and 4B32's are the >rectifier. 3B28's are drop-in replacements for the 866A as well. >Confusing, isn't it? >From: "Donald Chester" <[EMAIL PROTECTED]> > >> > Well, I dont think they will do as well as the pair of 4D32s for power, >>you're gonna modulate a pair of tetrodes with a Mercury Vapor Rectifier? >> > >4B32's are the power tetrode, used in Viking I and 32V series. 4D32's are >xenon gas rectifiers, drop-in replacements for 872A rectifiers. Less flaky >than the MV rectifiers.

