SNIPPED
Is there a particular reason that you want to use this style of tube?

Today it is trivial to make a simple switching power supply that can
provide a couple of hundred volts at 98% efficiency, why not make one
of them, and use some real tubes?

-Chuck


OK, good info in your reply, Chuck. My reply to your question (above)
will probably elicit a whole lot of comments. I hope they're not too
negative! HI HI

I am recently retired, and am about to have some extra time on my
hands for some construction projects. With the re-surfacing of an old
news item about terrorists or certain nations who may attempt to launch a
nuclear EMP strike on this country, I was thinking about an old project I
had once wished to start many years ago; That is an EMP proof ham rig
for 75/40 .... probably CW only, for simplicity sake.

So I'm thinking of building a fairly simple tube rig, preferably
superhet Rx, with tubes that will run totally on a 12V supply. Assuming
that we never have such a terrible thing happen to us, a rig like this
would still be fun to use. Following the building of a Rx, I'll probably
build a simple one tube TX to match.

Ed