dec406 — Open-source COSPAS-SARSAT 406 MHz FGB/1G and SGB/2G SDR receiver and decoder. DSSS/OQPSK, real IQ recordings, MEOSAR downlink validation.
amateur-radio sdr digital-signal-processing elt airspy hamradio rtlsdr plb search-and-rescue plutosdr dsss sarsat 406mhz cospas-sarsat epirb distress-beacon oqpsk meosar emergency-beacon beacon-decoder
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Updated
Oct 30, 2026 - C