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SIM808 GSM + GPRS + GPS Cellular Module (Adafruit 2637)
The SIM808 GSM GPRS Module is at the heart of our Adafruit FONA 808 - Mini Cellular GSM + GPS Breakout. For people who want to integrate a cellular (GSM/GPRS) module into their design without the full breakout, this hand-solderable module is pretty nice! Please note we don't provide any tech support for this module, but we do have a schematic as well as a collection of datasheets and app notes that can be used to interface.
Here's the GPS specifications:
You'll need to add all of the supporting circuitry that is required, such as antennas, power regulation, any level shifting, LEDs, etc! You can check out our SIM808 Eagle placement object in the adafruit Eagle library.