[amsat-bb] Re: HELIX REFLECTOR?

[Anthony Monteiro]

Hi Pete,

Take a look at this article on helix ground planes:
<http://www.alzacomm.com/downloads/Helix_Letter.pdf>http://www.alzacomm.com/downloads/Helix_Letter.pdf 


It is also possible to make a helix with no ground plane.
This was a cover article of the IEEE Antennas magazine in 1995.
Search for the article

Kraus, J.D. A helical-beam antenna without a ground plane.
IEEE Ant. Prop. Mag., 37 (2), 45, 1995.

at

<http://ieeexplore.ieee.org/Xplore/guesthome.jsp>http://ieeexplore.ieee.org/Xplore/guesthome.jsp 


You have to buy this one from IEEE if you are not an
APS member.

Best of luck with your projects!

73,
Tony AA2TX
---


At 08:51 PM 6/3/2010, Pete Norris, K1HZU wrote:
>Hi All:
>I am rebuilding a 440 MHZ Helix that I built several years ago . It 
>worked very well, but I would like to reduce the size of the 
>reflector to a more manageable size than I had before. The only 
>reference to reflector size I can find is, "minimum 20" ". I may be 
>looking in the wrong places. I would appreciate it, if someone would 
>steer me in the right direction.
>Thanks,
>Pete, K1HZU
>
>
>
>
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