[Space] APRS trackers
longobord at gmail.com
Thu Jan 26 23:27:08 PST 2012
Another thing to worry about with an integrated GPS unit is if it'll read
above 40,000 ft. Most won't.
Freedom of expression is the matrix, the indispensable condition, of nearly
every other form of freedom.
- Justice Benjamin N. Cardozo
On Mon, Jan 23, 2012 at 11:52 AM, tedward <arbzed at gmail.com> wrote:
> Don't forget the venerable OpenTracker+, which will interface with a GPS
> receiver of your choice:
> On Sun, Jan 22, 2012 at 4:29 PM, Adam Engelhart <adam at tellumo.net> wrote:
>> Ladies and gentlemen--
>> Kindly find below my research on GPS/APRS trackers for Spacebridge.
>> I'm afraid I don't have as much information on the parameters we
>> need--I know that at a minimum we should have it track above 60k feet.
>> (As I understand it, it is required that civilian GPS devices not
>> track when traveling over BOTH 999 miles/hour AND 60,000 feet AMSL,
>> but that a distressingly large proportion replace that AND with an OR,
>> which is yet another part of what makes high-altitude balloonery so
>> interesting. *This is not legal advice*, and *I am not your,
>> Noisebridge's, or Spacebridge's lawyer*: http://ianyl.net/TINLA.html ;
>> http://ianyl.net/ .)
>> Regardless, I wasn't too sure about the weight or power budgets or of
>> what hardware we had on board or available, so I just looked up
>> whatever seemed decent. Results follow:
>> BigRedBee (http://www.bigredbee.com/blgps_2mhp.htm):
>> * Proven altitude records:
>> ; some astonishing stuff at http://californianearspaceproject.com/ as
>> * Includes GPS
>> * Can use entire 2M band, as well as 70 cm band (but
>> latter is
>> limited to 16 mW, as opposed to 5 W--need some kind of radio guru to
>> look at this)
>> * Supports various voltages
>> * $275! But includes radio.
>> Byonics TinyTrak3 (http://www.byonics.com/tinytrak/)
>> * Only $98 including GPS
>> * Former successful use:
>> http://www.eoss.org/hardware/k0yuk_aprs.htm .
>> * Needs external radio
>> * Can power GPS (5V)
>> These two seem to pretty much run the market, although there may be
>> something buried out there that I haven't been able to uncover. Once
>> again, IANYL/TINLA.
>> --Adam Engelhart
>> Space mailing list
>> Space at lists.noisebridge.net
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