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Advantages / Unique Features
No RF Emission
All data is transmitted over F/O line in the tether, resulting in no RF interference or emission.
Ease of Operation
With using Zenith QGC software, simplified operation as one button take off and landing.
Counter Drone Capabilities
Zenith offers counter drone capabilities with Echodyne Lidar and Droneshield software

Variable Height Antenna
Quickly set up a VHA up to 400` (120m) with radio relays like MPU5 and others.
Reliable and Safe Operation
Back-up battery, communication and other failsafe functions provides safe and reliable operation
100+ hrs Proven Endurance
Zenith tethered drone solutions can provide persistent surveillance with unlimited flight time

Key Features
Zenith Aeorotech Tethered Drone flying at a hover altitude 400 feet
- Tethered Unmanned Aerial Vehicle – Unlimited time on station
- Simplified operation
- Heavy payload capacity
- Flexible payloads
- Highly customizable solutions
- Hover altitude up to 400 ft AGL (higher with FAA waiver)
- Fail-safe battery backup
108 Hours Continuous Flight Test
Endurance Test
Quad 8 multi-rotor platform flew a total of 161 hours and 49 minutes—108 hours of which were continuous, uninterrupted flight.
Tethered UAS Endurance Test DetailsTethered UAS System Components

Tethered Vehicle
• 100+-hour of proven endurance
• Heavy payload capaciy
• Enhanced multilevel falesafes
• Simplified Operation

Ground Station
• 400 feet tether with F/O
• Secure power and communications
• Voltage drop compensation
• Interchangeable spool system

Control Software
• One button take off and landing
• Click and go navigation and yaw
• System health monitoring
• Integrated payload control
Zenith QGC Software

Zenith QGC software is a ground control station software which is dedicated to our tethered UAS operations, designed for the operators to proceed successful missions. In a basic operation, operator presses take-off button, enters flight altitude to the slider and confirms the take-off. Tethered Unmanned Aerial System will automatically take off and hover in the altitude.
Operator can navigate with clicking on the map and use go to function, operator can also yaw to the position, all the payload data and controls are implemented on the software. For ending the mission operator clicks to the land button and confirms the action. All the safety procedures and fail safe options are automated, operator does not need to take action for these applications.
Zenith Aerotech News and Press Releases
Zenith Aerotech is the leading, U.S.-based manufacturer of, heavy-lift Tethered Unmanned Aerial Systems (TeUAS) for defense, federal agency, first responder, industrial, and commercial applications. See our news section for our latest break thoughts, press releases, and other news.
- September 17, 2025
What is a Variable Height Antenna (VHA)? Zenith Quad-L mounted with Silvus 4200, Silvus 4400 and Persistent Systems MPU5 Radios A variable height antenna is a communication or signal relay system that can be dynamically positioned at different altitudes to optimize performance. Traditionally, antennas are fixed to ground-based structures, limiting their […]
- August 29, 2025
Zenith Aerotech is attending Constellis Tactical Expo at September 4. Date: September 4 2025 Time: 9.00 AM to 3.00 PM Where: Constellis Training Center 350 Puddin Ridge Road, Moyock, NC Visit our boot for latest information on tethered drone systems. Tactical Expo 2025
- August 29, 2025
Come spend the day with us at Zenith HQ! Get hands-on with our newest MRDS PDW (ZF-9 & ZF-10), enjoy range time, connect with industry vendors, and giveaways, demos, and more. Whether you’re a die-hard fan or new to Zenith, this is your chance to see it all up close. You can also check Zenith […]