The G4 provides global, real-time user tracking and two-Way messaging in an all-in-one device. The G4 offers a migration path from basic tracking and communication to more advanced capabilities without the need to purchase a new device.

It utilizes the new Iridium 9603N modem which assures a reliable world-wide connection on the current and next generation satellite systems. The G4 is a certified Automated Flight Following (AFF)  solution that can be a fixed mount or moved from aircraft to aircraft. AFF ALERT reports can be sent by pressing the dedicated button. Text messages, either pre formatted or free form, are sent in real-time and are viewed via any smart phone or tablet.


  • Tracking – AFF Certified. Provisioned for future requirements without replacing the device
  • Two-Way Text – Convenient communications with dispatch
  • Mobile App – Bluetooth connectivity with any smartphone or tablet for two-way text messaging, diagnostics and more
  • Future Enhancement – Migration path from basic to advanced features on the same device
  • Integrated Back up Power – For sending last message
  • Built-in Sensors – Temp, rapid descent detection, etc.
  • MARK/ALERT Button – User selectable -Allows the cockpit crew members to send an immediate position or alerts to the ground
  • Configurable I/O Reports – Door open, Water bucket, etc.
  • Antenna Options – Internal or various external options available
  • Configuration Changes – On the device or over the air (OTA)
  • Field Upgradeable – Ease of updates without removing or returning the device
  • Iridium NEXT – Uses the latest 9603N modem compatible with Iridium next generation satellite constellation


PHYSICAL – Size: W 150 mm x H 100 mm x D 33 mm Weight: 350 g (0.77 lbs) excludes optional mounting bracket

ENVIRONMENTAL – Operating temperature: -20 Deg C to +55 Deg C (-4 Deg F to +131 Deg F) Storage temperature: -40 Deg C to +80 Deg C (-40 Deg F to +176 Deg F)

MODEM – Iridium 9603N

SENSORS – Altimeter, 3 axis Accelerometer, 3 Axis Gyro, 3 Axis Magnetometer, Temperature

POWER –  9 – 28V 1A Maximum – Socket type power connector – Integral UPS for shut down messages

CONNECTORS –  USB A, Mini-B 2 x SMA (GPS, Iridium Antennas)

INTERFACE – Bluetooth 4 connectivity with all smartphones, tablets, laptops

TRACKING REPORTS – Configurable Position and Manual Position updates

MESSAGES – Preformatted (up to 99) & Free Form Text messages (up to 150 characters each message)

ANTENNAS – Internal and external antenna options (GPS, Iridium) GPS 66 Channel ultra high tracking sensitivity (-165 dbM) receiver

Patch Antennas

Patch antennas

  • GPS and iridium puck style non-magnetic Antennas are connected to the exterior of the device using SMA/SMB connectors
  • The Antennas can be positioned in the cockpit for optimum satellite reception, and removed with the G4 after the flight
External Mount Antennas

External mount

  • Antenna is installed on the exterior of the aircraft with an unobstructed view of the sky
  • Best suited for situations where the antenna must be securely fastened to the exterior of the aircraft permanently
  • This antenna is approved for use by the FAA under a Technical Standard Order (TSO)


  • The G4 is a portable device or fixed mount


Optional accessories

  • Talk to your Guardian Mobility sales representative or reach out to one of our valued international partners to discuss other options you may require. Our Dealer Network