The tethered drone emergency communication system mainly consists of a tether box, an airborne power supply, and a communication base station. The tether box integrates an AC/DC converter, tether cable, cable retraction and deployment device, servo motor, communication module, heat dissipation system, and control and management system. The tether box converts AC power provided by power supply equipment such as mains power, generator, or mobile power supply into high-voltage DC power, which is transmitted to the airborne power supply through the tether cable. The airborne power supply converts the high-voltage DC power into low-voltage DC power to power the drone and other mission payloads such as the communication base station, enabling up to 12 hours of uninterrupted flight and allowing it to perfectly complete long-term emergency communication missions.

Tethered relay systems are primarily used for signal relay in emergency scenarios. The system has established deep partnerships with major telecommunications operators and can be flexibly equipped with Tel devices and shortwave communication equipment to meet diverse communication needs. Typical application scenarios include: rapidly establishing relay signal transmission links at disaster sites to ensure smooth rescue command and information transmission; rapidly establishing relay signal networks in areas with no signal coverage, such as the Gobi Desert and mines, to fill communication gaps; and rapidly constructing local communication networks in complex terrain environments such as mountainous areas to achieve 360° all-around wireless monitoring and ensure the real-time transmission and sharing of critical information.