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SiRFstarIII™ 20-channel GPS SMD compact module/receiver with enhanced high altitude power saving modes.
The ISM300F2-C5-V0004 module is programmed with HIGH ALTITUDE BUILD, ceiling 135,000 feet, and works at cold temperatures for balloon applications.
More information to come. Used on Ava flight computer. Project Ava
External link : ISM300F2-C5-V0004
Eagle Schematics for Breakout Board / device for ISM300F2 :
WARNING READ BELOW → ism300breakout.zip ← WARNING READ BELOW
The breakout board does have a fault:
You need to supply VCC to the antenna pin even if you are using an active antenna.
This is missing from the breakout you just need to either correct it on the PCB or run a quick wire from JP2 to the Antenna pin and connect that as per Inventeks datasheet.
Subtle image here :