Appendix A. Specifications; Hpt135 Vhf Modem Specifications; General Radio Specifications - Javad HPT135 series Operator's Manual

S
PECIFICATIONS
A.1. HPT135 VHF 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.
Operating Frequency Range
Channel Spacing
Data Rate (25kHz Channel Spacing)
Data Rate (12.5kHz Channel Spacing)
Data Rate (6.25 kHz Channel Spacing)
System Gain for DBPSK
modulation (Antenna gain is not
included)
Roaming Speed for DBPSK modulation 75 mph / 120 km/h
Modulation
Nominal Impedance
End to End delay
www.javad.com
Table A-1. General Radio Specifications
Parameter Specification
138 - 174 MHz
25/12.5/6.25 kHz (USA)
30/15/7.5 kHz (Canada)
25/20/12.5 kHz (EU)
9600 bps – DBPSK/GMSK
19200 bps – DQPSK/4FSK
28800 bps – D8PSK
38400 bps – D16QAM
4800 bps – DBPSK/GMSK
9600 bps – DQPSK/4FSK
14400 bps – D8PSK
19200 bps – D16QAM
2400 bps – DBPSK
4800 bps – DQPSK
7200 bps – D8PSK
9600 bps – D16QAM
161 dB (for 25 kHz Channel Spacing)
163 dB (for 12.5 kHz Channel Spacing)
164 dB (for 6.25 kHz Channel Spacing)
GMSK/4FSK/DBPSK/DQPSK/D8PSK/D16QAM
50 Ohms
60 ms
Appendix A
25