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 aluminum case with passive cooling. Tunes from 500 kHz to 1.766 GHz with up to 3.2 MHz (2.4 MHz stable) of bandwidth. Works 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 improved R828D tuner, a 1PPM TCXO, better components, 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. 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 Amazon messaging for technical support - we're happy to help.
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