[Milsurplus] (Non) NVIS

[Hue Miller]

Dave - a long while back IIRC I quoted from a German manual.
The manual was something like, auf Englisch, "Provisional Use
of Motor Vehicles for Communications", or maybe something 
less highfalutin. Anyway also IIRC it showed how to rig an 
ordinary, I think canvas top truck,for the equivalent of the
frame antenna. It was basically to run wire back and forth
across the top of the truck. Which seems to clearly establish
that the frameantenna in its variants seems to be nothing
but a high-capacitance loaded short vertical. Some of the
German transmitters used for mobile use worked lower
freqs than we were using, for example the 100WS 
200 - 1200 kcs., the 30WS and 80WS,  1 - 3 Mcs.  You
definitely would want a capacitive loaded antenna to
help you work into a really short antenna at these freqs.

Some model of the Japanese tankette also had a frame
ring around the turret at top, but in that case I'm sure
it wasn't an antenna, no wait, I'm reasonably sure,
as I think what tank communications there was, was
by simpler superregen type systems above 30 Mcs.
I believe very few of their tanks had any kind of radio.
-Hue