This blocks takes a frequency modulated signal, filters out other frequencies, demodulates it, recovers the clock and outputs the result as bit stream
Frequency Shift Keying is a way to transmit information over radio waves. By sending radio waves a bit faster and slower, two states can be encoded that are used of zeros and ones.
- Open
fsk-demod.grcin GNU Rradio Companion - Execute the Flowgraph
The block is now available in the category GRC Hier Blocks.
| Parameter | Unit | Description |
|---|---|---|
| Center frequency | Hz | The frequency around the signal moves up and down |
| Multiplication | 1 | 1: high frequency = 1, -1: high frequency = 0 |
| Sample rate | Hz | The sample rate of the input signal |
| Frequency deviation | Hz | The amount the signal deviated from the center frequency |