Feature:1. Wide Frequency Range: This small loop antenna is suitable for a wide frequency range from 50kHz to 500MHz. It is suitable for a variety of radio equipment such as radios, SDRs and transceivers, providing excellent reception in the HF, AM, FM, VHF and UHF bands.2. Active Reception Technology: This small loop antenna is equipped with an active amplifier and top of the line components to ensure optimal signal reception. The loop antenna offers twice the voltage gain compared to conventional loop antennas, while the shielded loop antenna structure effectively reduces interference caused by external factors such as lightning or electrostatic discharge.3. Easy To Install: This loop active receiver antenna consists of a top patch panel, small loop amplifier board, loop coil, feed unit and 12V power supply. Its simple and compact design allows for easy modification and installation.4. 12V Linear Power Supply: This ring active receive antenna is powered by a 12V linear power supply with a current consumption of less than 150mA, making it energy efficient.5. Sturdy And Durable: This radio active loop antenna is made of excellent ABS and alloy steel material, which is sturdy and wear resistant, not easy to be damaged, and has a long service life.Specification:Item Type: AntennaMaterial: ABS, Alloy SteelReceiving Frequency Range: 50KHz-500MHzGain: 17dB at10MHzOutput Noise: -125dbm (at 10MHz, BW=100Hz)P1dB: +15.5dBm at 10MHzSupply Voltage: 5V-12VPower Supply Current: 130mA-150mAAntenna Interface: SMA (M)Output Connector: SMA (F)Small Ring Coaxial Cable Model: RG402Small Ring Coaxial Cable Loss: 0.145dB/mSmall Loop Antenna Diameter: 600mm.Package List:1 x Small Loop Antenna Amplifier Board1 x Connector1 x Headphone Jack Adapter1 x Top Patch Panel2 x Small Loop Coils (RG402 Coaxial Cable)1 x 7 Meters Feeder Cable1 x 1 Meter Feeder Cable2 x Sticky Hooks1 x Manual1 x EVA Storage Bag