[amsat-bb] Re: AO40 replacement !!!
db at db.net
Wed Sep 5 12:05:20 PDT 2012
On Wed, Sep 05, 2012 at 07:35:22PM +0100, Gordon JC Pearce wrote:
> On 05/09/12 16:48, Trevor . wrote:
> >Getting CubeSat's to MEO or HEO will depend on developing propulsion,
> >fold-out solar panels, and even CubeSat directional antennas - I
> >wonder could a 2m 2 ele Yagi be incorporated into a 3U CubeSat ?
> As a first-order approximation, my HB9CV is just about 260mm between
> elements, or a little shorter than a 3U cubesat. So it seems to me that
> you could make a two-element "tape measure" beam with the elements
> wrapped around the can at opposite ends and ensure it always points
> driven end downwards. The rest is just standard pyro to unwrap the
> aerial elements.
Piece of wire driven by some electricity works well enough. No need
for big pyro explosions.
> Gordon JC Pearce MM0YEQ
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Diane Bruce VA3DB
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