I poked around a bit on that site-I'll check it out more tomorrow. My vehicle 
is a liquid so acceleration will be lower than a solid.  Max velocity will 
still be ~ mach 2 and max altitude will be over 100k ft. 

The successful recovery rate with large amateur liquids is very low so every 
idea will help to find the wreckage later!

Not to get off topic too much but if anybody's interested, my project is at 
http://watzlavick.com/robert/rocket/index.html

There was a good gps discussion on aRocket a few months back- I wish I could 
have bridged all the smart guys here with all the smart guys there. 

-Bob

On Jun 6, 2012, at 22:37, Cliff Sojourner <[email protected]> wrote:

> probably the best rocket tracker
> 
> http://bigredbee.com/blgps_2mhp.htm
> 
> there are others.  depending on acceleration and duration, GPS + APRS 
> tracking can be unreliable.  it seems most COS parts fail at over 15Gs 
> acceleration; the ITAR limits come in at 60000 feet and/or mach 1.
> 
> so, additionally fly a simple Morse tracker like this
> 
> http://bigredbee.com/BeeLine.htm
> 
> between the two, you will get your rocket back.  speaking from experience!!
> 
> Cliff K6CLS
> 
> On 2012-06-06 20:13, Chris Albertson wrote:
>> Why not fly a tiny GPS inside the rocket?  Either modulated the beacon with
>> the GPS serial data or record it to a micro SD card.
>> 
>> 
>> On Wed, Jun 6, 2012 at 7:33 PM, Robert 
>> Watzlavick<[email protected]>wrote:
>> 
>>> Sorry to resurrect an old thread but I also have a question about using
>>> the Thunderbolt in the future.  I'm considering using 4 of them in a
>>> multilateration setup to track an amateur rocket with an onboard beacon.
>> Chris Albertson
>> Redondo Beach, California
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