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Re: new to amsat



To be honest, your bandwidth needs for this is simply out of
the scope of the FM ham radio satellites.  Even on one of the
transponder sats, you would use up most of the total bandwidth
available for the whole satellite just for trivial usage.  I suggest
that you scale the whole thing back to just what is manageable
via APRS: i.e. GPS position and a very few bytes of sensor data
per pass.  It may be that hamsats are simply not a good match
for your idea.

Bob - AE6RV

--- truckwiz <truckwiz@bwig.net> wrote:

> Hi,
> 
>   In a perfect world here is what I would like to happen, satellite fly's
> by, rover sends a packet (or email) of info containing a photo of its
> current location and some sensor info. The next time the sat comes the rover
> receives its instructions (move 5 feet forward, power down & then power up
> and take photo and be ready to send info to sat when it comes by).  There is
> several reasons for doing it this way .We need the practice powering up and
> down, we also need to see that the rover has a good plan if it misses
> instructions for one reason or another.
> 
>  
> 
> Thanks Brian
> 
>  
> 
>  
> 
>   _____  
> 
> From: Ransom, Kenneth G. (JSC-OC)[BAR] [mailto:kenneth.g.ransom@nasa.gov] 
> Sent: Saturday, November 24, 2007 9:22 AM
> To: truckwiz; Jeremy Ramirez; amsat-bb@amsat.org
> Subject: RE: [amsat-bb] Re: new to amsat
> 
>  
> 
> If you could expand on your request to "control a robot from a satellite"
> with more specifics then you are likely to get better ideas and suggestions.
> 
>  
> 
> Some additional details like... Where would the command station and robot be
> located? How much time would you need to command the robot each day? What
> mode would the commands be sent in (digital, audio, FM, SSB...).
> 
>  
> 
> Hope your project goes well.
> 
>  
> 
> Kenneth - N5VHO
> 
>  
> 
>   _____  
> 
> From: amsat-bb-bounces@amsat.org on behalf of truckwiz
> Sent: Sat 11/24/2007 5:49 AM
> To: 'Jeremy Ramirez'; amsat-bb@amsat.org
> Subject: [amsat-bb] Re: new to amsat
> 
> My goal is to be able to control a robot from a satellite, I'm with a group
> that is trying to compete in the lunar X prize, here's a video of our
> earthbound test rover. Also what would be the best transmitter & receiver to
> buy for this goal?
> 
> http://www.youtube.com/watch?v=1CKO67FwFhc
> 
> Thanks Brian
> 
> -----Original Message-----
> From: Jeremy Ramirez [mailto:jramirez@wheatonparks.org]
> Sent: Friday, November 23, 2007 10:58 PM
> To: truckwiz; amsat-bb@amsat.org
> Subject: RE: [amsat-bb] new to amsat
> 
> Yes.  You need to have a amateur radio license for the bands you wish to
> work, specifically the "uplinks".  For example if you wanted to work some of
> the LEO satellites like AO-51, SO-50, etc. you need at least a "technician"
> class license.  Take a look at ARRL's information as to what bands you can
> operate with which license (see:
> http://www.arrl.org/FandES/field/regulations/bands.html).
> 
> Information about the amateur satellites in operation can be found at
> www.amsat.org.
> 
> Next question?  :-)
> 
>   Jeremy
>   KB9QIC
> 
> 
> -----Original Message-----
> From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On
> Behalf Of truckwiz
> Sent: Friday, November 23, 2007 8:59 PM
> To: amsat-bb@amsat.org
> Subject: [amsat-bb] new to amsat
> 
> Hi,
> 
>  This will be the first of probably 1000 questions. Do I need licenses to
> work with amsat satellites?
> 
> 
> 
> Thanks, Brian
> 
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> _______________________________________________
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> _______________________________________________
> Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
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