Where This Module Goes

CW, DTMF, HD Radio, mPSK, frequency hopping, ADS-B, and AIS, each built or decoded in GNU Radio, plus the workflow for taking an unknown signal from spectrum to bits.

Learning Objectives (6.1-6.4)

1. I can transmit and receive CW (Morse) using GNU Radio and decode a received CW stream.
2. I can decode DTMF tones from a captured audio signal.
3. I can describe how HD Radio works and demodulate an HD Radio signal.
4. I can implement an mPSK modulator and demodulator (BPSK, QPSK, 8PSK) and recover carrier and symbol timing.

Learning Objectives (6.5-6.8)

1. I can implement FHSS transmission and reception, including hop-sequence synchronization.
2. I can perform RF reverse engineering on an unknown signal: identify its modulation, symbol rate, and payload structure.
3. I can receive and decode ADS-B messages from aircraft transponders.
4. I can receive and decode AIS messages from marine vessels.

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