The FlySpark SkyControl-NB20 V2 20-Channel UHF Long-Range Radio Control System is a professional RC control link designed for UAVs, fixed-wing drones, VTOL platforms, aerial imaging aircraft, robotics, and advanced radio-control applications.This long-range UHF control system is designed to extend and strengthen radio-control communication for professional UAV and RC aircraft operations. It operates across the 400–470MHz frequency range with selectable working frequencies including 433MHz, 435MHz, 445MHz, and 455MHz, helping users configure the system according to project requirements and local radio regulations.With 20-channel capability, the SkyControl-NB20 V2 supports complex aircraft control setups, payload control, auxiliary switching, camera operator control, and collaborative pilot/co-pilot operation. It supports 2 PPM inputs and 1 S.BUS input, making it suitable for integration with compatible radio transmitters and UAV control systems.The system provides selectable RF output power levels of 0.5W, 1W, 2W, and 5W. Its built-in display allows real-time monitoring of system status, output servo data, and input signal information. Programmable RF power, channel mapping, system idle settings, and improved cooling make it suitable for advanced UAV builders and professional field operators.Key Features:• 20-channel UHF long-range radio control system • Operates across 400–470MHz frequency range • Supports 433MHz, 435MHz, 445MHz, and 455MHz frequencies • Selectable RF output power: 0.5W / 1W / 2W / 5W • High receiver sensitivity up to -115dBm • Supports 2 PPM inputs and 1 S.BUS input • Real-time display for system status and signal information • Output servo data display support • Input signal analysis support • Programmable RF power setting • Programmable system idle and channel mapping • Improved cooling fan for stable long-duration operation • Suitable for pilot and co-pilot collaborative control setups • Designed for UAVs, fixed-wing drones, VTOL aircraft, and advanced RC platformsSpecifications:Product Type: UHF Long-Range Radio Control System Brand: FlySpark Model Name: SkyControl-NB20 V2 Control Channels: 20 channels Frequency Range: 400–470MHz Supported Frequencies: 433MHz / 435MHz / 445MHz / 455MHz RF Output Power: 0.5W / 1W / 2W / 5W selectable Receiver Sensitivity: -115dBm Input Support: 2 PPM inputs and 1 S.BUS input PWM Support: Requires signal converter Display: System status display, servo output display, input signal analysis RF Power Control: Remote control / touch screen / programmable settings System Idle Control: Remote control and programmable Channel Mapping: Supported Cooling System: Improved cooling fan Antenna Type: SRH771 wide band receiving antenna Receiver Model: 4047NB20RX compatible receiver Product Weight: Approx. 0.6kg Compatible Platforms: Fixed-wing UAVs, VTOL UAVs, multirotor drones, RC aircraft, robotics, payload control systemsPackage Includes:• 20-channel narrow band receiver x 1 • SRH771 144/430MHz wide band receiving antenna x 1 • RF module with cooling fan x 1 • Wiring kit x 1Applications:• UAV long-range radio control • Fixed-wing drone control systems • VTOL UAV control links • Large RC aircraft control • Payload and camera operator control • Pilot and co-pilot collaborative control • Aerial imaging aircraft • Research and development UAV projects • Robotics and unmanned vehicle control • Professional RC control system integrationThe FlySpark SkyControl-NB20 V2 is suitable for UAV manufacturers, drone integrators, RC aircraft builders, aerial imaging operators, research teams, and professional users who need a flexible 20-channel UHF long-range radio control system for advanced unmanned platforms.Important Note: Use only according to local radio-frequency regulations and permitted frequency bands in your region.