5
Wireless Radio Modem Users Manual
Rev:B1.2
1.2 Specifications
1.2.1 SST-900EXT Wireless Radio Modem
RF Communication Transceiver
Frequency Band : 909 to 924 MHz for SST-900
Channel Spacing : 2.048 MHz (8 channels jumper select)
Output Power : 20±2 dBm
Modulation : GMSK
Time Division Duplexing
Transimition Range : Max 300M
SST Transceiver
Direct Sequency Spread Spectrum
Non-Overlapping Channels : 8 channels, jumper select (only for
full-duplex operation)
Full-duplex or Half-duplex, jumper select
Synchronization or Asynchronization, jumper select
Serial Communication Interface
RS-232(TxD, RxD, GND) and RS-485(D+, D-), jumper select
Baudrate : 600bps to 57600bps, jumper select
Environment
Operating Temperature : 0°C to 50°C
Storage Temperature : -30°C to 70°C
Power Supply
Input : +10 to +30VDC, unregulated
Consumption : 1.5W
