[Milsurplus] Re: German non-NVIS

[Hue Miller]

----- Original Message ----- 
From: "Robert Flory" <robandpj at earthlink.net>

> The rollbar cage antenna pictured and described on     
> http://www.tactical-link.com/WWII_NVIS.htm
> 
> would radiate with predominately vertical polarization and be unsuitable
> for sending a signal straight up......

> In the case of the rollbar cage antenna on the vehicle, the feedpoint is a
> current maximum, and the bar it attaches to would be the radiator.  The
> rest of the structure is mostly loading.

Exactly. A capacitor antenna. Not a loop antenna of any kind. Despite
what the US Army Communicator magazine article says.
I did receive an answer from Arthur Bauer in NL  about this subject.
He has a good size collection of Wehrmacht gear and has written about
it.  His replies also ixnays the Wehrmacht-Heer NVIS theory.  I will 
eventually post his reply here, but i can't find it right now and have
other priorities.

> 
> There is good antenna modeling software out there by K6STI, that divides
> antennas up into little pieces and numerically adds up the vector sum of
> the contributions of all the little pieces in all directions and makes nice
> displays of patterns and gives feedpoint impedances etc.  

This is a good lead. This would be good for looking at those aircraft antenna
or unusual folded hamband antenna ideas. -Hue Miller