Evaluated 7 approaches for multi-channel CB radio monitoring on
Raspberry Pi 400. Top candidates: RTLSDR-Airband (existing software,
quick setup) and custom C with librtlsdr + liquid-dsp (~950 LOC,
meets all requirements exactly). Ruled out SDRTrunk, SDRAngel,
GNU Radio, rtl_fm, and Go-based approaches.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Captures all functional and non-functional requirements from the
requirements interview: simultaneous CB frequency monitoring, NFM
demodulation, squelch-based activity detection, automatic WAV
recording with conversation grouping, YAML config, and console logging.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
