Rtl-SDR Full Range Programmable HF Radio Receiver 100KHz-1.8GHz TXCO 0.5 PPM SMA Accurate USB Frequency Key DescriptionThis is an RTL-SDR software defined radio receiver with RTL2832U ADC chip, R820T2 tuner, 1PPM TCXO, SMA F connector and aluminum housing with passive cooling. Tunes from 100 kHz to 1.8 GHz with up to 3.2 MHz (stable 2.4 MHz) with instantaneous bandwidth. (HF operates in direct sampling mode.) Ideal for use as a computer radio scanner with free software such as SDR#, HDSDR, sdr-radio, GQRX or SDR Touch for android. It runs on Windows, MacOS, Linux, Android and single board computers such as Raspberry Pi. Great for many applications including general radio scanning, air traffic control, public safety, ADS-B flight radar, marine AIS, acars, trunked radio, P25/MotoTRBO digital voice, POCSAG, weather balloons, apr, NOAA APT/Meteor M2 weather satellites, radio astronomy, DAB, Or as a cheap panadapter with a standard ham radio. This model has several improvements over other models. It uses an upgraded R820T2 tuner, a 1PPM TCXO, has better components, a redesigned circuit board, cooling upgrades, additional ESD protection, and an SMA F connector. Requires USB 2.0 or later. Features on DVB-T+DAB+FM+SDR RTL2832U R82T2 TCXO+HF. Please for support. Features:lt; 1 PPM Temperature Compensated Oscillator (TCXO)-Fine tuning and near-zero temperature drift (max. 2 PPM initial offset, 0.5-1 PPM temperature drift). SMA female antenna port-Generic dongles use the less common MCX or PAL antenna ports. SMA is more common, so more adapters and antennas are available for it. It is also more and has lower RF insertion loss. HF reception in direct sampling mode - listen to 100 kHz-25 MHz with direct sampling. Simply connect the HF antenna to the SMA port and select q-branch mode. There is a built-in 25 MHz low-pass filter, but additional HF filters may be required for optimal performance (e.g. to attenuate strong MW AM). Better cooling system, large aluminum case and passive cooling-these units come with aluminum case and passive cooling by two cooling fans. And the circuit board is designed specifically for passive cooling through cooling holes and a large aluminum housing. This stops reception due to lack of heat above – 1.2 GHz.Use R820T2 tuner, higher quality passive components, choke on USB cable to reduce USB noise, vastly improved PCB design for much less internal spurs and noise, various breakouts, improved ESD protection, additional bypass capacitors and ferrite line chokes, improved front end matching circuit, and better LDO. Lower overall noise, higher sensitivity. It can be tuned from 100 kHz to 1.8 GHz and has up to 3.2 MHz (stable 2.4 MHz) instantaneous bandwidth. (HF reception below 24 MHz operates in direct sampling mode.) With LNA, low noise amplifier for HF signals. 10 times amplification than normal HF reception. Great for many applications including general radio scanning, air traffic control, public radio, ADSB, AIS, acars, trunked radio, P25 digital voice, POCSAG, weather balloons, APR, NOAA APT weather satellites, radio astronomy, meteor scatter monitoring, DAB, or for use as a low-cost panadapter with a traditional rail radio. Package Contents:RTL SDR Radio Receiver Kits x 1Small Testing Antenna x 1USB Cable x 1