This is an RTL-SDR software defined radio receiver with RTL2832U ADC chip, 1PPM TCXO, SMA F connector, R820T2 tuner and case with passive cooling.<br> Tunes from 500 kHz to 1.7 GHz with up to 3.2 MHz (2.4 MHz stable) of instantaneous bandwidth.<br> (HF mode works in direct sampling mode).<br> Perfect for use as a computer based radio scanner with free software like SDR#, HDSDR, SDR-Radio, Linrad, GQRX or SDR Press on Android. Works on Windows, OSX, Linux, Android and embedded Linux computers like the Raspberry Pi.<br> Great for many applications including general radio scanning, air traffic control, public safety radio,ADS-B aircraft radar, AIS boat radar, ACARS, trunked radio, P25/MotoTRBO digital voice, POCSAG, weather balloons, APRS, NOAA APT weather satellites, Meteor M2 satellites, radio astronomy, meteor scatter monitoring, DAB, or for use as a low cost panadapter with a traditional ham radio.<br> This model has several improvements over other brands. It uses the improved R820T2 tuner, comes with<br> a 1PPM TCXO (no drift and accurate tuning with a 2 PPM initial offset and 1 PPM temperature drift), improved component tolerances, redesigned lower noise PCB, cooling improvements, extra ESD protection and an SMA F connector.<br> It also comes with a software activatable bias-tee circuit for powering external devices such as LNA's and active antennas.<br> Quantity:1Pc<br> colour:Silver<br> Material:metal<br> size:8.8x2.3x1.5cm<br> Package Contents:<br> 1*Software Defined Radio