It was my understanding that some of the tubes from Russia were in fact
made by hand. I would like to know how you progress in this.
In regards to a previous negative comment, what compels someone to
write a derogatory comment about someone for their technical ideas? In
the Xtals crystals society there is a book on building a crystal set
from scratch, headphones and all without purchasing any built
electronic parts. More power to people who do it!!!

Airy R. Bean wrote:
As time passes, valves of the sort and size that we use in our TX's
are becoming increasingly rare and expensive.

There is nearly a century of folklore and industrial craft in
producing
valves and overcoming problems thereto, and it seems to me that now
is the
time to gather together this expertise before all the associated
craftsmen
and industrialists go to the grave and their knowledge becomes lost
forever.

Armed with such a body of knowledge, could we Radio Hams, as a body
of
technically-motivated and technically-inspired aficionados, then
consider
manufacturing our own?

Is it not, after all, our pride in such technical activity that sets
us
apart from
the CBer who buys all his gear from a shop (and even sends it back
their
if ever it needs repair)?