
Digital UHF II Internal Modem Board Details (Optional)
48
P/N: 1006148-01
Sp
ecification
s
Digital UHF II Internal Modem Board Details (Optional)
Table 9. DUHF II Internal Modem Board Specifications
Operating frequency
range
• 410MHz – 470MHz for Rover
• 420MHz – 470MHz for Base
Channel spacing
12.5 KHz / 20KHz / 25KHz user selectable
Signal modulation
• 4FSK
Communication mode
Time division duplex
Supported protocol(s)
Proprietary, PDL, Trimble
Transmitter carrier power
10, 20, 50, 100, 200, 500 and 1000 mW, user selectable
Receiver sensitivity
GFSK: -119 dBm at 10
-4
BER and 12.5 KHz spacing
4FSK: -114 dBm at 10
-4
BER and 12.5 KHz spacing
Receiver dynamic range
-119 to -1dBm
Serial data rate
1200, 2400, 4800, 9600, 14400, 19200, 38400, 57600,
115200 bps
Radio data rate
25KHz: 9600 bps for GFSK and 19200 pbs for 4FSK
12.5KHz: 4800 bps for GFSK and 9600 pbs for 4FSK
Antenna type
Whip antenna
Antenna connector
BNC
Error correction
FEC on/off