[amsat-bb] Re: AO40 replacement !!!

Diane Bruce 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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