30627 9522b Iridium L-Band Data Modem
Excellent global coverage
weather applications supported water applications supported energy applications supported gas flux and turbulence applications supported infrastructure applications supported soil applications supported


The Iridium satellite network consists of a constellation of 66 satellites situated in 6 planes in low-earth orbit. Each plane is populated by 11 satellites in polar orbits, giving the Iridium network excellent coverage in high latitudes that equatorial satellites often cannot reach. Read More


Technical Description

The Iridium Satellite System used with Campbell Scientific consists of the modem, data/power kit (COM9522B), data cables, antenna and power supply. The base and remote stations utilize the same modem type, which both require a change to their configuration.

The recommended connection of the remote modem for all dataloggers is via the RS232, however, the CSI/O port can also be used with the SC932A interface. Power/Data kits are required to connect the modem to the datalogger or computer and an appropriate power source. For remote applications where AC power is not available it is recommended to operate the modem on a schedule to avoid discharging the battery power supply.

The antenna used for both Iridium modems is the SAF5350A mast mount antenna. For best signal reception the antenna should be mounted so that it has an unobstructed view of the sky and horizon. Reception quality changes as satellites move overhead so it is critical that the view be clear.


Power Supply

  • Operating: 4 – 32 VDC, 333 mA @ 12 VDC
  • Standby: 125 mA @ 12 VDC
  • Off State: 20 µA



  • Operating temperature: -30°C to +70°C
  • Operating humidity: 25% to 75%
  • Storage temperature: -40°C to +85°C
  • Storage humidity: 93% (max)


RF Interface

  • Frequency range: 1616 MHz to 1626.5 MHz
  • Duplexing method: TDD (Time Domain Duplex)
  • Oscillator stability: ± 1.5 ppm
  • Input/output impedance: 50 ohms
  • Multiplexing method: TDMA/FDMA



  • Length: 162 mm
  • Width: 81 mm
  • Depth: 28 mm
  • Weight: 420 g (approximate)


Datalogger Considerations

Compatible Contemporary Dataloggers

CR200(X) Series CR800/CR850 CR1000 CR3000 CR5000 CR7X CR9000X

Compatible Retired Dataloggers

CR510 CR10X CR23X CR9000

Case Studies

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