RTL-SDR V4 R828D RTL2832U 1ppm TCXO

A popular SDR usb stick to get started with Software Defined Radio (SDR). This can handle 500Hz to 1.5GHz

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 difference between version 3 and version 4 

* Improved HF Reception thanks to a built-in upconverter instead of using a direct sampling circuit. Some positive consequences are that there’s no more Nyquist folding of signals around 14.4 MHz, improved sensitivity, and adjustable gain on HF.

* Improved filtering thanks to the three inputs of the R828D tuner chip found in the V4 dongle. Three bands (HF, VHF, and UHF) are captured through the SMA connector with some isolation between the bands and less risk of interference from broadcast stations.

* Improved Filtering is made possible through the open drain pin on the R828D tuner which connects to notch filters for common interference bands such as broadcast AM, broadcast FM, and the DAB bands.

* Improved phase noise on strong signals and less heat thanks to the improved power supply design with less noise and low consumption.

* Various minor changes such as a new bias tee LED and a small cutout hole in the enclosure to more easily tell when the bias tee is on.

    

Several programs can be used for this, e.g.:

SDR# ("SDR sharp")
HDSDR
SDR-RADIO.COM V2
Linrad (linux)
GQRX(linux)