redsea

Lightweight command-line FM-RDS decoder

redsea is a lightweight command-line decoder for broadcast FM-RDS data, such as that provided from a software-defined radio (SDR). It can also decode raw ASCII bitstreams, the hex format provided by RDS Spy, and audio files containing multiplex signals. Decoded RDS groups are printed to the terminal as line-delimited JSON objects; optionally, undecoded hex blocks can be output instead. This program is intended to be used in combination with a separate source of demodulated FM multiplex signals, such as rtl-sdr.