There are also noise reduction and noise blanker features and an automatic frequency centering algorithm which will automatically center the signal, so you don’t need to click exactly in the center of a signal. The audio processing also supports placing of notch filters either manually or automatically. Bandpass filtering the audio can really help clean up a noisy signal. The output audio can also be bandpass filtered by dragging the filter borders on the display. Users will also find an Audio FFT and waterfall display on the bottom of the screen. The official installation instructions can be found here.Īlong with a FFT display and waterfall, HDSDR has some extra advanced features. The other dlls that come with HDSDR will not work with the RTL-SDR, even though they have RTL-SDR in their filename. When opening HDSDR, select the newly copied ExtIO_RTL2832.dll. To install HDSDR, download the program from the link on the main HDSDR page, then to use the RTL-SDR you will need to download the ExtIO_RTL2832.dll file an place it into the HDSDR folder. HDSDR supports the RTL-SDR through use of an ExtIO.dll module. HDSDR is based on the old WinRAD SDR program. SDR# also decodes RDS signals from broadcast FM. The basic SDR# download without any third party plugins includes a standard FFT display and waterfall, a frequency manager, recording plugin and a digital noise reduction plugin. It has a useful modular plugin type architecture, and many plugins have already been developed by third party developers. SDR# is a simple to use program that also has some advanced features.
SDR# is designed to be use with the $199 Airspy SDR, but works just fine with the RTL-SDR. We have a full overview of the installation procedure on our Quick Start Page. It is relatively simple to use compared to other SDR software and has a simple set up procedure. SDR# (pronounced “SDR Sharp”) is the most popular free RTL-SDR compatible software in use at the moment. We define general purpose SDR software as programs that allow the RTL-SDR to work like a normal wideband radio receiver.
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