NooElec NESDR Mini 2+ Al: 0.5PPM TCXO RTL-SDR & ADS-B USB Receiver Set w/Heavy Duty Aluminum Enclosure & Antenna. RTL2832U & R820T2 Tuner. Low-Cost Software Defined Radio An antenna, suction mount and SMA RF adapter are included Included heavy-gauge aluminium enclosure, fully assembled and ready to go! Large enough to add internal circuitry, if desired 0.5PPM TCXO installed as standard--rock solid tuning under nearly any conditions! SDR frequency capability 24MHz-1700MHz (approximate), extendable down to 100kHz with our Ham It Up upconverter (sold separately, B009LQT3G6) Contains RTL2832U & R820T2 chips for full compatibility with nearly all RTL-SDR applications