 | Portable GPS Sensor The Portable GPS Sensor may be placed near a window and attaches to your PC via a standard USB port. This GPS is powered by the SiRF Star III chipset and is contained in a waterproof enclosure. The included drivers work with Windows 7, Windows Vista, Windows XP, and Windows 2000. Specifications | GPS Frequency | L1 1575.42MHz | | C/A Code | 1.023 MHz | | Channels | 20 (all in view tracking) | | Sensitivity | -159 dBm (typical) | | Update Rate | 1 Hz | | Position Accuracy | < 15 m CEP (95%) horizontal, SA off | | Velocity Accuracy | 0.1 m/sec, SA off | | Time | ±100 ns synchronized to GPS time | | WAAS and EGNOS Support | No | | Cold Start | 42 sec | | Warm Start | 38 sec | | Hot Start | 1 sec | | Max Altitude | 18,000 m 59,000 ft | | Max Velocity | 515 m/s 1,152 mph 1,000 knots | | Max Acceleration | 4 g | | Reacquisition Time | 0.1 sec | | Datum | WGS-84 | | Protocol | NMEA 0183 V2.2, 4800 baud | | NMEA 0183 Sentences | GGA, GSA, GSV, RMC, VTG | | Power | 80 mA | | Operating Temperature | -40°C to +80°C -40°F to +176°F | | Storage Temperature | -45°C to +85°C -49°F to +185°F | | Operating Humidity | 5% to 90% non-condensing | | Antenna | Built-in Patch | | Dimensions | 56mm x 53mm x 22.5mm 2.2 in x 2.08 in x 0.88 in | | Weight | 96 g 3.38 oz | Windows is a registered trademark of Microsoft Corporation in the United States and other countries. |