This is an RTL-SDR blog V4 software defined radio receiver with RTL2832U ADC chip, R828D tuner, 1PPM TCXO, SMA F connector, built in HF upconverter, improved filtering, and aluminium case with passive cooling. Tunes from 500 kHz to 1.766 GHz with up to 3.2 MHz (2.4 MHz stable) of bandwidth. Can be used with free software like SDR#, HDSDR, SDR-Radio, GQRX or SDR Touch on Android. Works on Windows, OSX, Linux, Android and computers like the Raspberry Pi. This model has several improvements over other brands. It uses the R828D tuner, a 1PPM TCXO, better components, has a built in HF upconverter, a redesigned lower noise PCB, cooling improvements, additional filtering, extra ESD protection and an SMA F connector. It also has a software activatable bias-tee for powering LNA's and active antennas. This is a bundle which includes the main dongle and also our multipurpose dipole antenna kit. The antenna kit is great for beginners as it allows for terrestrial and satellite reception. Easy to mount outdoors and designed for portable and temporary outside usage. Please do not use outside during poor weather conditions. The RTL-SDR Blog V4 requires a driver update. Please follow the installation manual carefully! Reviewers that mention receiving no signals have not followed the instructions! Please feel free to contact us via Seller messaging for technical support - we're happy to help.