[Milsurplus] RadioSonde

[Hue Miller]

Which reminds me: if you were around in the 1960s (way back then), do you
recall those
"radiosonde" transmitter chassis at the surplus joint, the ones with a 3295
xtal and a
small flat bakelite piece as chassis, a 3A5 tube, and a few other parts
including an
rf choke of looked like 1-2 mH. There was NO tuned circuit, the rf choke was
the
plate circuit. These were called "radiosonde transmitters" both at the local
store and
in a CQ ad i saw once. I wonder what they were.With no tuned circuit/
antenna matching,
you wouldn't think they were designed to transmit a long ways well. Probably
IF they
had a tuned circuit, some ham would trim it and write an article, like they
did for the
BC-745 tuning units.
Hue Miller