Frequency range 902-928M Power supply 5.5-20V RS-232 interface Interface data rate 1200-230.400bps Indoor/Urban range (w/ 2.1 dBdipole antenna): Up to 3000feet (900 m)• Outdoor RF line-of-sight range(w/high gain antenna): Up to40 miles (64 km)• Outdoor RF line-of-sight range(w/ 2.1 dB dipole antenna):Up to 14 miles (22 km)• Transmit power output (software selectable): 1mW - 1W (0 - 30 dBm)• ...