[MRCA] Antennas

Richard Arland, K7SZ richard.arland at verizon.net
Sat Jul 22 00:28:24 EDT 2006


Al, et. al:

I have been surfing the web and found quite a bit of info out there on NVIS 
antennas. Here is a link that shows the layout of the actual NVIS antenna. 
The deminsions are not exactly the same as what Al gave in his message 
(attached) but it looks exactly like two off-center-fed dipole antennas 
spaced 90 degrees apart.

Go to: http://www.vcars.org/tech/NVIS.html and have a look. Is the AS-2259 
similar in construction?

73 Rich W3OSS



> Hi Gene,
>
> Short elements are 24' 9" and the long ones 36' 11".
>
> I've always been confused by the disposition of these elements.  The two 
> short ones are connected to the center conductor of the mast, and angled 
> at 90 degrees to each other.  The long ones are connected to the outside 
> of the mast, angled at 90 degrees to each other, 180 degrees around from 
> the short elements.  So the antenna seems to be crossed Windoms rather 
> than crossed dipoles.
>
> I'm not sure how important a matching network is with a true field radio. 
> They'll about load a wet noodle.
>
> Regards,
> Al



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