RTL-SDR FM Receiver
Jump to navigation
Jump to search
RTL-SDR Based FM Receiver
This tutorial describes how to receive broadcast commercial radio stations transmitting Frequency Modulated (FM) signals using the RTL-SDR receiver. The following hardware is needed for this tutorial:
- RTL-SDR Receiver
- VHF Antenna
Please connect the antenna to the RTL-SDR, and plug the RTL-SDR into the USB port on your computer.
Configuring the RTL-SDR Properties
Add the Soapy RTLSDR Source block to the flowgraph. Soapy [1] is a SDR support library which interfaces with different SDR hardware.
The receiver needs to be configured with a proper sampling rate, center frequency and gain value. The RTL-SDR supports multiple sampling rates but in this tutorial the maximum sampling rate of 2.048 MHz is chosen. Update the samp_rate variable with the value 2048000:
