User's Manual

Appendix A
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SPECIFICATIONS
A.1. HPT435 UHF Modem Specifications
The following sections provide specifications for the modem and its internal components.
A.1.1. General Radio Specifications
Table below lists the modem’s general specifications.
Table A-1. General Radio Specifications
Parameter Specification
Operating Frequency Range 406 - 470 MHz (EU)
406.1 - 470 MHz (USA)
406.1 - 430;450-470 MHz (Canada)
Channel Spacing 25/12.5/6.25 kHz (USA, Canada)
25/20/12.5 kHz (EU)
Data Rate (25kHz Channel Spacing) 9600 bps – DBPSK/GMSK
19200 bps – DQPSK/4FSK
28800 bps – D8PSK
38400 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)
161 dB (for 25 kHz Channel Spacing)
163 dB (for 12.5 kHz Channel Spacing)
164 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