[Boatanchors] 211H differences

[Robert Goff]

Greetings,

Does anyone know offhand the difference between an Amperex 211-H tube
and a regular 211-say General Electric type?  I pulled up the data
sheets and they seem to be about the same, but looking at the 211H the
plate structure seems like its coated with something.

Just saved a box of four of these Amperex tubes, NIB from the dumpster
at a house "clearing."  Usual story-OM's got alzheimers, kid's not
interested in radio-so out it all goes.  We did manage to save a few
things, though.

73,
Robert
W7MKA