Features: This loop antenna have builtin signal amplification circuit and noise suppression circuit, which can effectively amplifier signal and reduce the impact of noise. It is directional and that can also be of benefits to eliminate noise. SW2.30-30MHz (Adaptives Frequency). MW:522-1710KHz. Impedance:50ohm. Gain:20dbi. Feeder: BNC3.5, Battery:1000mAh. USB Type C charging is very convenient. The GA450 Active Shortwave Radio Antenna, offering a 20dbi boosts for improved performances. This receiving solution features a lightweight build, making it easy to installs and adjust for perfect result. Unleash the power of clear radio signal with the GA450, ensuring a listening experience wherever you go. Specifications: Material:ABS,Metal Package Includes: 1Set Loop Antenna note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.