The LH200 Tethered UAV System is an advanced unmanned aerial solution designed for persistent surveillance, reconnaissance, and communication relay missions. This system combines the agility of a multirotor drone with the reliability of a ground-based power supply, enabling extended flight durations that far exceed conventional battery-operated UAVs. At the core of the LH200 is a high-performance multirotor UAV connected to a ground station via a lightweight, durable tether cable. The tether provides continuous power from the ground, eliminating the need for battery swaps and allowing the drone to operate for hours or even days without interruption. This makes the system ideal for long-duration missions such as perimeter security, event monitoring, or disaster response, where uninterrupted aerial coverage is critical. The LH200 UAV is equipped with a stabilized electro-optical/infrared (EO/IR) gimbal, providing high-resolution day and night imaging capabilities. The system supports real-time video transmission through the tether, ensuring secure and low-latency data transfer without reliance on vulnerable wireless links. Additionally, the UAV can integrate other payloads, such as communication relays or environmental sensors, to adapt to diverse operational requirements. The ground station includes a compact power supply, tether management system, and a user-friendly control interface. Operators can monitor and control the UAV with ease, adjusting camera angles, flight altitude, and other parameters as needed. The system is designed for rapid deployment, with a setup time of just minutes, making it suitable for both fixed installations and mobile operations. With a typical operational altitude of up to 200 meters, the LH200 offers a wide-area surveillance footprint while maintaining a stable and secure connection to the ground. The tether also enhances security by preventing GPS spoofing or signal jamming, ensuring reliable performance in contested environments. In summary, the LH200 Tethered UAV System is a robust, long-endurance aerial platform that delivers persistent situational awareness for defense, public safety, and industrial applications. Its combination of unlimited flight time, high-quality imaging, and secure operation makes it a valuable tool for missions requiring sustained aerial presence.