[amsat-bb] Re: A0 40 replacement
8p6sm at anjo.com
Wed Sep 4 10:43:53 PDT 2013
However, to include operators with modest shacks, you need to allow
operation on modes A, B and/or J. A satellite operating on 24.0 GHz
won't be of interest to the average ham. Not until the average ham has
24.0 GHz capable antennas, feedlines, amplifiers, transceivers, etc, in
It's a vicious circle. Smaller satellites are easier to launch, but
support smaller antennas. This means higher frequencies, which excludes
more potential users. Reduction in potential user-base leads to reduced
support (financial) from said user-base. With less money to spend, it
becomes more difficult to obtain a launch, and to build the highly
miniaturized spacecraft in the first place.....
On 09/04/2013 11:31 AM, Bryce Salmi wrote:
> Yea but increasing frequency helps with that. With directional
> antennas the satellite would need attitude control which would benefit
> greatly from miniaturization. For the most part, miniaturization would
> come from incorporating systems on chips. Most op amps and
> microcontrollers are much smaller than their packages so including
> those systems on a single die in a single package are capable of
> massive savings in space. This is what made smart phones even possible .
> Gus <8p6sm at anjo.com> wrote:
> On 09/04/2013 02:26 AM, Brenton Salmi wrote:
> Let's put it in another possible context: Create an extremely
> dense and reliable LEO platform in cube-sat form that weigh's
> a fraction of AO-40's weight using today's high-density
> components/systems and create a reliable and feature rich HEO
> The only problem with this, is that certain components can't be
> miniaturized. Example: Antennas. And HEO satellites need more
> sophisticated antennas.
> Pity the cube-sat idea didn't finish up with a ten INCH cube...
> 73, de Gus 8P6SM
> Barbados, the easternmost isle.
> Sent via AMSAT-BB at amsat.org. Opinions expressed are those of the author.
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> Sent from my Android phone with K-9 Mail. Please excuse my brevity.
73, de Gus 8P6SM
Barbados, the easternmost isle.
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