INMARSAT FALCOM250

1 GENERAL

Transmit frequency                :1626.5 MHz to 1660.5 MHz 1.2

Receiving frequency               :1525.0 MHz to 1559.0 MHz 1.3

Channel interval                     :1.25 kHz 1.4 G/T

Better than                             :-15.5dB/K 1.5 EIRP 15.1 dBW 2

2 ANTENNA UNIT

Antenna type                          :Patch array antenna 2.2

Gain                                         :Greater than 11.0dBi 2.3

Axial ratio                               :Less than 4.0dB 2.4

Antenna beam width              :40° approx. (at -3 dB) 2.5

Stabilization                            :Three-axis control 2.6

Positioning                              :Az: 0° to 360°, El: 5° to 90° 2.7

Position accuracy                    :Within 0.6dB (95% time) 2.8

Tracking                                  :Electrical beam tracking system :

3 COMMUNICATION UNIT

Voice                                       :4 kbps AMBE+2 or ISDN3.1 kHz audio*

Data                                        :Standard IP 284 kbps (RX, best effort)

Short message service            :Up to 160 characters

Facsimile                                 :Group 3 facsimile via 3.1 kHz audio*

3.2 Modulation                       :QPSK, 16QAM