[amsat-bb] Re: How best to park your satellite antennas
ko6th_greg at hotmail.com
Tue Sep 2 19:59:06 PDT 2008
Looking at the picture, Domenico's suggestion of going vertical and sideways is still going to put all of the antennas broadside to the wind. Instead, how about just aiming them at wind direction (either at it or directly away), horizontally? That way the only wind load would be from the antenna's end-on area, instead of the whole length. This is what I do, and it seems to have worked. If I go vertical, my worry is that the height of the antenna gets to be a good bit longer than the width of the tripod base, and I'm concerned the whole thing will tip over.
But, Domenico does have an interesting idea about aiming at 90-degrees from the wind, but horizontal. That would put the dish edge-on to the wind, at the expense of putting the beams sideways to the wind. Given the modest size of my dish, I would expect that it's not going to be better that way.
How does one calculate such a thing, given that I don't know the manufacturer's wind loading of anything, and don't care to earn a degree in fluid dynamics? Any very simplified back-of-the-envelope way to get a rough idea?
My picture at: http://home.wavecable.com/~ko6th/IMG_0141b6.jpg
> From: g.shirville at btinternet.com
> To: amsat-bb at amsat.org
> Date: Tue, 2 Sep 2008 18:26:20 +0100
> Subject: [amsat-bb] Re: How best to park your satellite antennas
> Thanks for all the comments...and apologies for the link error ...it should
> have read 220.127.116.11
> > If you look at 193.51.07.114 you can see the sort of array that I am
> talking about!
>> Many thanks
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> Sent via AMSAT-BB at amsat.org. Opinions expressed are those of the author.
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