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Re: Re: Useless CubeSats



As I see it any Satellite in the Amateur Band is good for AMSAT and the
AMSAT Community. On 2 GHz we have 60 MHz of bandwidth then there is 3.3,
5.6, and 10 GHz.  The 10 GHz band has 500 MHz of bandwidth.
What will we loose? Lots of problems need solving, perhaps patch antennas on
all sides switched to keep the pattern focused on earth. Maybe covering the
larger patch antennas with solar cells. None of the current amateur
satellites have a CP antenna pointed at Earth during the whole pass using
the same rotation.
Instead of deciding these projects are worthless, maybe some suggestions and
guidance will help us improve the technology in our satellites.

Art, KC6UQH



----- Original Message -----
From: "William Leijenaar" <pe1rah@hotmail.com>
To: <amsat-bb@amsat.org>
Sent: Monday, February 07, 2005 1:22 PM
Subject: [amsat-bb] Re: Useless CubeSats


> Hi AMSATs,
>
> I think CUBESATS can be interresting for some small scientific
experiments.
> The way they are now presented is in my view not a right picture.
>
> They are presented as a learning basis for young students to learn how to
> build a satellite.
> I don't know how a 10cmx10cmx10cm cubic construction can ever help to
> understand how to build a real satellite of several meters in diameter.
>
> Its like giving a truck-mechanic-student a small truck model to learn how
to
> repair a truck engine.
>
> Like I mentioned a while ago, it would be much better when these students
> work together on a real big (international) satellite. When this satellite
> would also give something that can be usefull for universities or ham
radio
> it would be interresting...
>
> SSETI is a good example of such cooperation between European universities.
>
> A better use for the CUBEs would be on a high-altitude balloon.
> The boxes are small and light, and ideal for such missions.
> These missions are less expensive and are 100x more educative because
after
> the box returns down, the student can inspect what has happened to the
> electronics.
> You can only learn when you know what you have done wrong, and when you
can
> change it and try again.
>
> 73 de PE1RAH,
> William
> ---
>
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> ----
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----
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