Meitrack T622E-F9 / T622G-F9 Iridium Vehicle GPS Tracker for Remote Fleet Operations
Modern fleets rely on constant visibility, but standard GSM networks still fail in remote regions, deserts, oceans, and polar routes. The Meitrack T622E-F9 and T622G-F9 Iridium vehicle GPS trackers solve this gap by combining GSM and Iridium satellite connectivity in a single device, so vehicles stay connected almost anywhere on the planet.
What is the irridium satellite network?
The Iridium satellite network uses a constellation of 66 low Earth orbit satellites to provide global coverage, including oceans and polar areas. It was originally built to cover locations where terrestrial mobile networks cannot reach. By using Iridium Short Burst Data (SBD), the Meitrack T622E-F9 / T622G-F9 can keep sending location and key sensor data even when a vehicle is operating far outside GSM coverage. Meitrack is an authorized Iridium reseller and provides Iridium SBD airtime service, which simplifies deployment and billing for fleet operators. (read other articles)
How does the T622E-F9 / T622G-F9 Function?
The T622 series is a high-end vehicle GPS tracker line that supports both cellular and satellite communication. The T622G-F9 is an Iridium Connected tracker, built for trucks, buses, heavy equipment, and other mobile assets that move between urban networks and remote zones.
Key functions include:
• GPS positioning with GSM base station fallback (LBS)
• Real-time location and historical track playback
• Support for Iridium satellite communication when GSM is unavailable
• CAN bus interface (J1939) for vehicle diagnostic and performance data
• Multiple I/O ports for sensors and accessories
• SOS emergency alarm and towing alarm using a G-sensor
• GEO-fence alerts for area entry and exit
These functions make the device suitable for freight transport, mining fleets, fuel transport, air cargo support vehicles, and maritime-related logistics.
What are the GSM / Iridium Working Modes?
The T622E/G-F9 supports three selectable communication modes:
• Automatic mode, which prefers GSM and switches to Iridium when GSM coverage is lost
• GSM-only mode
• Iridium-only mode
In practical use, fleets commonly run in automatic mode to keep cellular costs low while maintaining satellite backup in critical regions. When the GSM signal is lost for a period of time, the tracker starts sending Iridium data according to the selected mode and interval.
How to Control Satellite Data Cost?
Satellite bandwidth is expensive, so the T622E/G-F9 uses a CCA Dynamic protocol and configurable parameters to reduce traffic. Users select which data fields are sent by Iridium and define the reporting interval. For example, if one Iridium record is about 15 bytes and is sent once per hour, an estimated 12 KB per month can be enough for essential tracking.
This control lets operators limit satellite usage to priority data such as position, speed, basic status flags, and alarms, while more detailed data can continue to use GSM where coverage is available.
Fuel Monitoring and Theft Alerts for the T622E/F-F9
The T622E/G-F9 can connect to an ultrasonic fuel level sensor over RS232. In that setup, the tracker can report:
• Fuel level status
• Fuel filling events
• Fuel theft events
• Low fuel and full fuel alarms
These events are uploaded to the server and presented on the Meitrack tracking platform, giving clear fuel usage and security information for each vehicle.
Hardware and Interface Summary
Typical specifications for the T622G-F9 include a power supply range of DC 11.4–36 V at 1.5 A, an operating temperature range around -20°C to 55°C, and a compact form factor suitable for installation in trucks and heavy vehicles. The device includes a dedicated external Iridium antenna operating near 1621 MHz, with about 5 dB gain and 50 Ω impedance for stable satellite links.
Interfaces commonly available on the T622 series include digital inputs, analog inputs, outputs, RS232 ports, RS485, USB, a CAN bus interface, and a 1-Wire interface. These allow connections to cameras, Garmin navigators, RFID readers, fuel level sensors, temperature sensors, and other accessories.
Platform Integration and Fleet Use
Once data is uploaded to the server, users can monitor vehicles through Meitrack’s platform. Typical functions include real-time positioning, alert handling, historical route review, and reporting. The T622E/G-F9 can also work with third-party platforms that have integrated the Meitrack protocol.
Why Fleets Choose Meitrack’s Iridium Solution
Meitrack has worked in GPS tracking for around two decades and has deployed the T622 series in many commercial fleets. The Iridium-enabled T622E-F9 / T622G-F9 targets operators who need:
• Reliable visibility where GSM coverage is weak or absent
• A single device that combines GSM, GPS, and satellite links
• Integration with CAN bus and external sensors
• Control over satellite traffic and cost
By blending Iridium satellite communication with proven vehicle tracking hardware, the T622E-F9 / T622G-F9 gives fleets a practical path to global coverage without reengineering their entire telematics stack.
