Iridium Pilot - Appendix B - Specifications

6: Appendices
58 Iridium Pilot User Manual
AppendixB–Specications
RF Performance
Frequency of Operation TX 1616 to 1626.5 MHz
RX 1616 to 1626.5 MHz
Channelization FDMA spacing 41.67 KHz
TDMA Timing 8.3 mS slot in a 90 mS window
Channels available 64 channels
EIRP 1 ch (voice) 1.1 watts average power
64 ch (max data rate) 2 watts average power
Modulation Voice/Data QPSK
Antenna Type 6 dual element azimuthal
array and 1 zenith element,
electronically switched and phase
steered
Polarization RHCP
Gain +8 dB
Beam Width Hemispheric coverage (60° per
element)
Steering Automatic solid state
Coverage Horizon to horizon
Ship’s Motion provides useful link margin up to
roll=20°
Power Requirements
Main Power (AC) Voltage 100 - 240 VAC
Frequency 50/60 Hz
Output Power 100 W (24 volts @ 4.2 Amps max)
DC input (power module) DC Input Voltage 11 to 32 VDC
Power In Standby 18 Watts
Power During Call 22 Watts
Power During Data 31 Watts