21 Aug
2008
21 Aug
'08
9:07 p.m.
Indeed, the first computer circuits I remember
purchasing used dual-
triode submini tubes with wire leads--ISTR 6 of them per PCB. I
bought them for the tubes used as VHF amplifiers--and the silvered
mica caps on the boards. The tubes themselves were mounted on metal
plates on either side of the PCB and in spring clips and had round
bases, not the flat ones that you'd find in a Pixie radio (my first
2N109 went into a socket scavenged from one of those). Most likely
from some military gear.
AN/UPA-24 SIF decoder, maybe.
One of these days I will get a complete all tube IFF SIF set working.
Hey, its octal, so its cool.
--
Will