[Milsurplus] Very Interesting WWII German Transmitter

[Hue Miller]

Dave, how is the motor geared down to the very low RPM for the
key wheel?

Very interesting example of war-expendable electronics, actually
more in the ordnance world.  The circuit is absolutely minimal,
no quartz used, as Germany had a very limited supply. The case
is an organic material, not synthetic, and it could be fashioned
from less-strategic material by not highly trained slaves. Contrast
the somewhat crude box from the totally up to spec nameplate.

One thing puzzles me, DFing this thing in the broadcast band
might be a challenge, wouldn't it? And the frequency, you
couldn't really depend on it coming up on a tightly controlled
frequency, seeing as the trail wire capacitance is a good part
of the tuned circuit.   -Hue Miller