NooElec NESDR Nano 2 - Tiny Black RTL-SDR USB Set (RTL2832U + R820T2) with MCX Antenna and Remote Control; Software Defined Radio, DVB-T and ADS-B Compatible, ESD Safe Best available SDR for portable Android & IOS applications, remote installations, embedded applications, and anytime a tiny SDR is ideal--less than 1" square! Contains RTL2832U interface IC and the new, improved R820T2 tuner! This tuner has improved sensitivity and SNR compared to devices using the R820T. Unmatched price-performance. 1-year warranty direct from NooElec! With locations in both the US & Canada, and full technical support services, your investment is a safe and wise one. Free high-quality telescopic antenna, much improved over the older thin-whip style antenna. Turn on, tune in and...listen! Frequency capability is approximately 25MHz-1750MHz, with no gaps within that range. Expansion to HF, all the way down to 100kHz, is available with the Ham It Up upconverter (sold separately).