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Read the review published in the August 2007 issue of ARRL's QST Magazine Download the programming software Download the documentation
In addition to the BeeLine GPS transmitter, you will need a suitable receiver and APRS packet decoder (or TNC). Most 70cm amateur radio transceivers/receivers will work, as long as they have an audio output connector (most do). To decode the APRS packet, you can use your PC and soundcard with standard APRS software, or a dedicated decoder like the PicPac from Byonics.
Here are some more pictures of the decoders in action, including the Kenwood TH-D7A(g).
The BeeLine GPS also has on-board non-volatile memory that stores coordinates for download after your flight. 128 k-bits of storage means you get more than 10 minutes of data. View your flight profiles in Google Earth! Here is a flight to 17,000 feet AGL on a single use AT K250. Click on the picture to make it larger.
This product will be made available to licensed amateur radio operators only, or others with the proper authorization to transmit on the desired frequency. Features:
Uses:
Current Software / Firmware / Documentation:
Or, look at ALL of the software versions Tested TNC's (AX.25 packet decoders)
Limitations: Due to the power output levels of this transmitter, proper packet reception and decoding require a FREE AND CLEAR LINE OF SIGHT between the transmitter and receiver. The typical usage model will be to capture and decode packets as the rocket descends under 'chute. Once your rocket hits the ground (or goes behind that ridge), it's likely that you will lose the ability to receive and decode packets. (But you can still track the transmitter as if it were a standard RF beacon). Links: Compare the prices! GPS FLIGHT, Loki and ATHA products use a 900Mhz spread spectrum transmitter: http://www.stephensonline.ca/atha-aerospace/agts1.html http://lokiresearch.com/arts.asp AED uses a a fixed frequency 433.92 Mhz transmitter module: http://home.vianetworks.nl/users/aed/rdas/gps.htm
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