ArWest alphawave AW400, User Manual, Page: 33 / 44

Appendix A
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S
PECIFICATIONS
A.1. AW400 UHF Modem Specifications
The following sections provide specifications for the modem and its internal components.
A.1.1. General Radio Specifications
Table A-1. General Radio Specifications
Parameter Specification
Operating Frequency Range 406 - 470 MHz
Channel Spacing 25/20/12.5/6.25 kHz
Data Rate (25kHz Channel Spacing) 9600 bps – DBPSK/GMSK
19200 bps – DQPSK/4FSK
28800 bps – D8PSK
38400 bps – D16QAM
Data Rate (20kHz Channel Spacing) 7500 bps – DBPSK/GMSK
15000 bps – DQPSK/4FSK
22500 bps – D8PSK
30000 bps – D16QAM
Data Rate (12.5kHz Channel Spacing) 4800 bps – DBPSK/GMSK
9600 bps – DQPSK/4FSK
14400 bps – D8PSK
19200 bps – D16QAM
Data Rate (6.25 kHz Channel Spacing) 2400 bps – DBPSK
4800 bps – DQPSK
7200 bps – D8PSK
9600 bps – D16QAM
System Gain for DBPSK
modulation (Antenna gain is not
included) 149 dB (for 25 kHz Channel Spacing)
149 dB (for 20 kHz Channel Spacing)
151 dB (for 12.5 kHz Channel Spacing)
152 dB (for 6.25 kHz Channel Spacing)
Roaming Speed for DBPSK modulation 75 mph / 120 km/h
Modulation GMSK/4FSK/DBPSK/DQPSK/D8PSK/D16QAM
Nominal Impedance 50 Ohms
End to End delay 60 ms
Communication Mode Time Division Duplex (TDD)
Time Division Multiple Access (TDMA)
Maximum Distance Range 11 miles / 18 km
Input/Output Serial (RS232) up to 115200 bps