Features: The ATL3606 Active Antenna delivers enhanced signals reception with resistant 9V battery operations, featuring high gains control knob for precise adjustment to optimize shortwave and radio frequency captures. Built with metal components and a clear LED power indicators, this antenna supports single mode cable compatibility for seamless integration with receivers or transceivers in interferences prone environments. Ideal for radio enthusiasts, shortwave listeners, and communication hobbyists seeking stable signals amplification without external power dependency in remote or electrically noisy locations. Suitable for capturing clear broadcasts, amateur radio transmissions, or emergencies communication signals in attics, basements, or outdoor setups where traditional antennas underperform. Its portable battery powered design and 360 adjustable loop antenna enable quick deployment for field operations, while the reverse polarity protections ensures safe operations across varying reception conditions. Specifications: Component:Metal Working voltages: DC6V~15V Frequency: Ranges: The aviation frequency band and frequency modulation signals are 100kHz-120MHz. The shortwave signals is 100kHz~30MHz. Gains: 0~400 (approximately 40dB) Package Includes: 1Piece Active Antenna note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.