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RE: Re: Repeater on the Moon or geosat




Not to burst your bubble, but here are some issues with Geo birds as they
pertain to amateur radio use:
While operational, GEO birds are designed to utilize 100% of their generated
power for transponder operation. Operating a Geo on orbit is a cash cow for
the operators. No one will ever give hams power to operate a payload since
it will be perceived as lost of potential income.
Geo birds are replaced for several reasons: Failure (we all understand
that). Exhausted housekeeping propellant, or a new bigger bird is awaiting
its slot in the belt. When the bird is out of propellant, it is moved out of
its Geo spots. Nowadays, the GEO slots are so valuable that no one leaves an
old bird up. They build a replacement bird to put in its spot. Of course,
the old bird still have lots of power generation capability, but with no
propellant, it becomes a dangerous drifter in the geo belt. The operators
would rather deorbit it to make room for larger geo birds.
Based on this, I don't see much chance of any commercial entity letting hams
on geo bird.
Assi 4x1kx/kk7kx





-----Original Message-----
From: owner-AMSAT-BB@AMSAT.Org [mailto:owner-AMSAT-BB@AMSAT.Org]On
Behalf Of Graham Shirville
Sent: Fri, May 02, 2003 11:30 AM
To: Frederick M. Spinner; amsat-bb@AMSAT.Org
Subject: Re: [amsat-bb] Re: Repeater on the Moon or geosat


Hi Fred,

My assumption was that the massive solar arrays that these satellites have
(?approx 6kilowatts) would still be functional and that therefore having our
own batteries would not be a requirement.

cheers

Graham
----- Original Message -----
From: "Frederick M. Spinner" <fspinner@hotmail.com>
To: <amsat-bb@AMSAT.Org>
Sent: 01 May 2003 22:42
Subject: Re: [amsat-bb] Re: Repeater on the Moon or geosat


>
> Where would we get power for the satellite 10 years after initial launch?
> Any batteries we would provide would already be toast, and I'm assuming
the
> main playload's might be as well.
>
> Fred W0FMS
>
>
> >Imagine a standardised AMSAT geosat payload that would only be activated
> >AFTER the main payload has died or been declared no longer required and
> >when
> >the sats have been moved to their higher orbits.
>
> _________________________________________________________________
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> ----
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