A BVLOS drone with 40 minutes of flight time and a top-tier thermal camera is worth nothing if it loses signal 3 kilometers from base.
That’s the core of BVLOS drone connectivity: a channel that holds up for the whole mission, from takeoff to landing, or one that repairs itself when it breaks.
The coverage problem
4G/LTE covers cities well. Mountains, coastlines, quarries, remote job sites, rural areas: not so much.
Think of an inspection along a power line in the mountains, or a check of a stretch of coast far from the nearest town. Those are exactly the places where BVLOS flights make the most economic sense, because sending a pilot there in person costs time and budget. They’re also the places where cellular signal comes and goes, or doesn’t show up at all.
A single communication channel, however good, doesn’t hold up for a critical mission in those conditions. If cellular drops mid-flight and there’s no backup, the drone stops sending data and commands. The pilot loses control, or loses it for long enough that the mission has to stop.
On an infrastructure inspection, that means a wasted flight and a technician driving back out to the site. On a search and rescue operation, those lost minutes cost a lot more.
Building reliable BVLOS drone connectivity
The answer is redundancy: multiple channels working together, so if one drops, another takes over without grounding the flight.
D-COM-BOX integrates both terrestrial channels (LTE, Wi-Fi, Bluetooth, LoRa) and a satellite channel onboard the drone, through an Iridium SBD transceiver with global coverage. When cellular disappears, satellite takes over. High-definition video, which needs real bandwidth, stops. But telemetry and flight commands, which only need a few kbps, keep working. The drone keeps answering the pilot even without ground network.
AvioGate FT pushes further: independent USB-C power, 4G/LTE SIM, Iridium SBD satellite module, high-precision GNSS, 4 RS232/TTL serial ports, RJ-45 Ethernet, all managed by a Linux SoC paired with an ESP32. It’s modular, up to 4 boards in one enclosure, and picks the best available network on its own, wherever the mission happens to be, with no operator stepping in to switch manually.
What this means if you’re choosing a system
Before buying a drone, ask this: what happens when it loses signal halfway through the mission?
If the answer is “the flight stops,” that mission already has a low ceiling. Redundant, BVLOS-grade connectivity raises that ceiling. A mission ends with data on the ground instead of a drone gone silent somewhere out of reach, while a client waits for a report that never comes.
Want to see D-COM-BOX or AvioGate FT in action on your fleet? Fill out our contact form or email us at info@adpmdrones.com to set up a demo.