The Freedom Keychain GPS SiRF III Receiver is really small, so small I could lose it in a jiffy. Instead of carrying bulky GPS receivers around like the Holux GR-239 GPS Receiver, the Freedom Keychain GPS SiRF III Receiver is heaven-sent.
The Freedom Keychain GPS SiRF Receiver is currently the world’s most compact and neatest GPS receiver available, and is capable of connecting simultaneously to up to up to 20 satellite channels, as well as having a solid working time of 10hrs. Get the Freedom Keychain GPS SiRF III Receiver for $129.95
Specs for the Freedom Keychain GPS SiRF III Receiver
GPS Specification: Chipset – SiRF Star III. 20 Channels “All-In-View” tracking. Protocol: NMEA 0183/GGA, GSA, GSV, RMC, VTG, GLL.
Baud Rate: 57,600 bps. Frequency L1, 1,575.42 Mhz. Tracking Sensitivity: 159 dBm..
Position deviation*: 10 meters 90%. 2D RMS 1-5 meters. Velocity: 0.1 m/sec..
Effective temperatures: Storage: -40°C +70°C. Working: -20°C +60°C. Air humidity: 5 – 90%
Internal Ceramic Patch antenna. MMXC connection for external antenna.