The LH120 Tethered System is an advanced aerial platform designed for persistent surveillance, reconnaissance, and communication relay missions. It combines the flexibility of unmanned aerial systems with the stability and endurance of tethered operations, making it ideal for both military and civilian applications where prolonged aerial presence is required. At its core, the LH120 consists of a high-performance unmanned aerial vehicle (UAV) connected to a ground-based power and control station via a durable tether. This tether provides continuous power, eliminating the need for battery swaps and enabling indefinite flight durations limited only by operational requirements and maintenance schedules. Additionally, the tether ensures secure, high-bandwidth data transmission, reducing latency and interference risks compared to wireless alternatives. The UAV itself is engineered for stability and reliability, featuring a robust airframe capable of operating in diverse environmental conditions, including high winds and extreme temperatures. Its modular payload bay supports a variety of sensors, cameras, and communication equipment, allowing customization for missions such as border security, disaster response, or infrastructure monitoring. A key advantage of the LH120 is its rapid deployment capability. The system can be set up within minutes, providing immediate aerial coverage without the logistical complexities of traditional aircraft. The ground station includes intuitive control interfaces, enabling operators to manage flight parameters, payload functions, and real-time data feeds with ease. Security is another critical feature, as the tethered connection minimizes the risk of signal jamming or cyber interference, ensuring uninterrupted operation in contested environments. Furthermore, the system’s low acoustic and visual signature enhances stealth for sensitive missions. In summary, the LH120 Tethered System offers a versatile, long-endurance aerial solution for persistent situational awareness. Its combination of continuous power, secure data links, and adaptable payloads makes it a valuable asset for defense, public safety, and industrial applications requiring reliable, real-time aerial intelligence.