NooElec ADS-B Discovery 3dBi Antenna Bundle - 1090MHz & 978MHz Antenna Bundle for SMA and MCX-Connected Software Defined Radios (SDRs) Kit contains a 1090MHz SMA antenna, a 978MHz SMA antenna, and 2 male MCX to female SMA pigtail cables Perfect for embedded or portable ADS-B applications where weight and size are primary concerns. NOTE: NOT recommended for ground installations or where range is a primary concern. For a higher-gain version for longer range applications, please see product ID B01J9DH9U2 Antennas have foldable hinges for a multitude of mounting options Compatible with any SDR with SMA or MCX input connector Pigtail cables are made from quality RG316 and kept to 6" in length to minimize loss