This SIRF Star III GPS Engine from US Global Sat is a only a little bigger than a 50 pence piece, but out-performs many of its bigger and more expensive competitors.
It has a built in patch antenna, and a battery on-board, to allow quick satellite fix.
The device uses an amazing 20 channels, each with a stunning tracking sensitivity of -159dBm, enough to get a satellite lock in difficult urban canyon situations, or even inside some buildings.
A very simple lead provides serial TX and RX in Sirf binary or NMEA format.
This module is truly fantastic, given its size, features, performance and price.
Features
- SiRF Star III high performance GPS Chipset
- Very high sensitivity (Tracking Sensitivity: -159dBm)
- Extremely fast TTFF (Time To First Fix) at low signal level
- Supports NMEA 0183 data protocol
- Power Supply : 5V @ 70mA
- Built-in SuperCap to reserve system data for rapid satellite acquisition
- Built-in patch antenna
- LED indicator for GPS fix or no fix :
- LED OFF: Receiver switch off
- LED ON: No fixed, Signal searching
- LED Flashing: Position Fixed
- Accuracy : Position: 10 meters, 2D RMS 5 meters, 2D RMS, WAAS enabled
- Size : 30mmx30mmx10.5mm A 6-pin interface cable to the unit is included.
Resources :
- Datasheet
- Generic GPS Command Protocol
- Test Utility
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