5: APPENDICES
36 Iridium Pilot™ Installation Guide
Appendix B – Specications
RF Performance
Frequency of Operation Transmit 1616 to 1626.5 MHz
Receive 1616 to 1626.5 MHz
Channelization FDMA Spacing 41.67 KHz
TDMA Timing 8.3 ms slots in a 90 ms repeating
frame
Channels Available 250 Channels (max 64 per iOP)
EIRP Voice (1 line) 1.1 Watts average power
Data (64 ch) 6 Watts average power
Modulation Voice/Data QPSK
Antenna Type Electronically switched and phase
steered 6 dual element azimuth
array and 1 Zenith element
Polarization RHCP
Gain +8 dB
Beam Width Hemispheric coverage (60˚ per
element)
Steering Automatic solid state
Coverage Horizon to horizon
Ship’s Motion Useful link margin up to 20˚ pitch
and roll
Power Requirements
Mains Power (Power module) Input Voltage 100 to 240 VAC
Input Frequency 50 or 60 Hz
Output Power 100 Watts (24 volts @ 4.2 Amps)
BDE DC Input DC Input Voltage 11 to 32 VDC
Standby Power 18 Watts
Power During Call 22 Watts
Power During Data 31 Watts (max power
consumption)