User Manual
Table Of Contents
- 1.0 Product Overview
- 2.0 Standards Compliance
- 3.0 Physical Specifications
- 4.0 Electrical Interfaces
- 5.0 Instructions for the safe Installation and use of the 9522B LBT
- 6.0 Modem Commands and Configuration
- 7.0 Installation of the 9522B in place of a 9522A
Iridium Satellite LLC
9522B L-Band Transceiver Product Information Guide
4.6 RF Interface
4.6.1 RF Interface Specifications
The RF interface requirements for the 9522B LBT are summarized in Table 7 below.
Table 7: General RF Parameters
Parameter Value
Frequency Range 1616 MHz to 1626.5 MHz
Duplexing Method TDD (Time Domain Duplex)
Oscillator Stability ± 1.5 ppm
Input/Output Impedance 50Ω
Multiplexing Method TDMA/FDMA
4.6.2 GPS Feed Thru Specifications
The RF interface of the GPS feed thru connector are summarized in below.
Table 8: General RF Parameters
Parameter Value
Frequency Range 1575 MHz
Input/Output Impedance 50Ω
Insertion Loss ≤3dB
Noise Figure ≤7dB
4.6.3 Radio Characteristics
The tables within this section contain radio characteristics of the 9522B LBT.
Table 9: In-Band Characteristics
Parameter Value
Average Power during a transmit slot (max) 7 W
Average Power during a frame (typical) 0.6 W
Receiver Sensitivity at 50Ω (typical) -118.5 dBm
Receiver Spurious Rejection at offsets > 1 MHz (typical) 60 dB
Table 10: Link Margin
Configuration Cable Loss Link Margin
9522B LBT with accessory antennas (Note 1) 2 dB (Note 2) 13.1 dB (Note 3)
Note 1: Other antenna options are available
Note 2: Cable losses should be minimized
Note 3: Link Margin given for free space
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