NI-RFSA: FM Radio Receiver

[Joshua-B]

Overview

This example will demodulate an FM RF signal and play the resulting waveform through your computers speakers.

Description

This example demonstrates how to use the NI-RFSA API and the Spectral Measurements Toolkit to turn a National Instruments RF Vector Signal Analyzer or a RF Vector Signal Transceiver into a software defined FM radio receiver. The device monitors the spectrum from 88-108 MHz and can play back any FM radio stations detected therein. It continuously acquires and FM demodulates data, while playing the audio signal back via a sound card and set of speakers.

This example can be used in conjunction with the NI-RFSG: FM Radio Transmitter example.

Requirements

1. LabVIEW 2012 or compatible
2. NI RFSA
3. Advanced Signal Processing Toolkit
4. Spectral Measurements Toolkit
5. NI Signal Analyzer

Steps to Implement or Execute Code
1. Open the "FM Radio Receiver LV2012 - NI Verified.vi"
2. Choose a valid RFSA resource on the front panel.
3. Set the desired center frequency and reference level.
4. Run the VI.
5. Select the desired frequency from the Peaks control. You can adjust the threshold level by moving the red line to determine what peaks are included in this control.
6. Press Play and adjust the Volume knob to the desired level.
7. Press Power to stop the VI.

Additional Information or References