[Milsurplus] tank radio skip?

[Bob Camp]

Hi

Interesting article in an interesting magazine. After reading it I'm 
wondering if tubes may be re-discovered some time soon ...

One of the most confusing things about all this is the pattern of a 
horizontal loop that is very closely spaced to a ground plain. It's not 
terribly easy to find data on a tight spaced loop. Most of the data you 
see is for loops that are spaced far enough from ground that they don't 
interact much with the ground plain.  What little is out there suggests 
that most of the energy goes straight up with tight ground spacing. 
More or less it's a very good antenna for NVIS work.

Since these guys in North Africa were using signals in the 2 to 10 MHz 
range that puts a different spin on the whole radio intercept thing. 
Getting HF in that range to bounce the Atlantic is pretty easy. The FCC 
certainly had sites set up for HF monitoring. The Rhode Island site was 
used for monitoring "in theater command links" in North Africa. Of 
course with NVIS the guys on the British side should have been able to 
pick up all the traffic them selves .....

Lots of questions with every answer.

	Enjoy!

		Bob Camp
		KB8TQ



On Feb 2, 2005, at 7:05 PM, Ed Zeranski wrote:

> Subject: Re: [Milsurplus] tank radio skip?
>
>
>>
>> ----- Original Message -----
>> From: "Ed Zeranski" <ezeran at ezeran.cnc.net>
>>
>>>     I recently read two articles in a Signal Corps magazine dealing 
>>> with
> the
>>> types of antennas we have been describing here used by the German 
>>> Army
> in
>>> WWII. They were NVIS antennas................
>>> EdZ
>>
>> Okay, you find the article stating that these were horizontal loop
> antennas, and i'll
>> look here for the manual on the 30WS transmitter.........
>
> The magazine is "Army Communicator" which is available online. The URL 
> below
> may not work so do a Google search for "Army Communicator" then look 
> at the
> Spring 2004 issue. The two articles deal with antennas( Mobility Favors
> Small Antennas: small-loop high-frequency antennas ) and the German 
> Army
> experience that has lessons for today (HF Combat Net Radio Lesson 
> Learned
> Again)
>
> http://www.gordon.army.mil/AC/Spr%2004/Spring%2004%20online.pdf
>
> EdZ
>
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