RTL-SDR V4 R828D RTL2832U 1ppm TCXO

En populär SDR usbsticka för att komma igång med SDR (Software Defined Radio). Denna klarar 500 kHz – 1766 MHz (Direktsampling 0.5-24MHz)

Skillnad mellan Version 3 & 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.