ADSB Antenna Active Receiving Antenna 1090MHZ for Improved Signal-to-Noise Suppression Ratio 1. Accurate Frequency: This antenna has precise and better locking frequency, which reduces the signal attenuation efficiency.2. High Frequency: The high frequency characteristics of this antenna reduces the difficulty of operation and increases the efficiency of operation.3. PCB material: This antenna is made of PCB material, double-sided board with a thickness of about 1.6mm/0.063in and full tin spraying process.4. Good passing performance: This antenna can provide good passing performance of large and small currents.5. 1090MHZ Frequency: This is an active receiving antenna with 1090MHZ frequency, which improves the signal-to-noise ratio. Specification: Item Type: Antenna Material: PCB Gain: 2.0dBi Frequency: 1090MHZ Interface: Female SM Packet List: 1 x Antenna Note: 1. Do not use excessive pressure2. Please allow 0-1mm/0-0.04in error due to manual measurement. Thanks for understanding.