Martin: I'd never heard of pandicon tubes before! That's so cool! Driving
them seems like a real pain, though, what with all the mandatory
multiplexing going on. Probably less of a pain if you're willing to use a
microcontroller? I would love to see some of your work, if you have a
link.
One
Hi Duncan,
I have some Elesta EZ10 A/B tubes (1MHz resp. 500kHz) that could do the job if
I can get the MHz of the 4MHz TCXO at 400kHz in a 'fair' way. There must be a
way using heterodyne mixing, but that goes
beyond my technical knowledge. HP used the technology in some counters in their
ear
Thanks for the warm welcome!
Michail: part of the challenge for the 1j24b CPU is to build the whole
thing without any silicon. Building the muxing and decoding circuitry for
the 5971s without using a PIC is part of the fun! Of course, sourcing
high-voltage germanium diodes is a slog.
eric: I
Hello Duncan,
Interesting projects.
About those Russian rod-gridded tubes I will refer you to TCA-member [
tubecollectorsassociat...@groups.io ] Joe Sousa (MIT). He did a lot of research
on these tubes. His reports are also published at Radiomuseum.org [
https://duckduckgo.com/?q=radiomuseum.o
