1. This Is A Receiver With Rtl2832u Adc Chip, R820t2 Tuner, 1ppm Tcxo, Sma F Connector And Aluminum Case With Passive Cooling. 2. Adjustable From 500 Khz To 1.7 Ghz, Bandwidth Up To 3.2 Mhz (2.4 Mhz Stable). (High Frequency Works In Direct Sampling Mode). Perfect For Use As A Computer-Based Radio Scanner With Free Software Such As Sdr , Hdsdr, Sdr-Radio, Gqrx Or Sdr Touch Android. Suitable For Computers Such As Windows, Osx, Linux, Android And . 3. Suitable For Many Applications, Including General Radio Scanning, Air Traffic Control, Public Safety, Ads-B Aircraft Radar, Acars, Trunked Radio, P25/Mototrbo Digital Voice, Pocsag, Weather Balloons, Aprs, /Meteor M2 Weather Satellites, Radio Astronomy, Dab Or As A Low Cost Panadapter For Amateur Radio. 4. Equipped With A Multifunctional Dipole Antenna Kit, Very Suitable For Beginners. Short Antennas Are Suitable For Ads-B, While Long Antennas Are Suitable For Lower Frequencies. When Used In A V-Dipole Configuration, This Antenna Is Suitable For Weather Satellites And The International Space Station At 137 Mhz. Vertical Configuration Of Terrestrial Signals. Two Brackets And 3 Meters Of Rg174 Cable Allow You To Easily Install The Antenna Outdoors. 5. This Model Has Some Improvements Over Other . It Uses An Improved R820t2 Tuner, 1ppm Tcxo, Better Components, Redesigned Low Noise Pcb, Cooling Improvements, Extra Esd Protection And Sma F Connectors. It Also Has A Software-Activatable Bias Tee For Powering The Lna And Active Antenna. Depending on the batch, the appearance, color, and printing of the product , which does not affect use. Type: Receiver Colour:silver Material:Aluminum alloy Size:about 7 x 2.8 x 1.4cm Package Contents: 1 x Radio Communication System Receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.