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redsea is an RDS decoder for Linux / macOS that outputs line-delimited JSON. It's something of a logger of a converter, dealing with the problem: how to take data of real-time nature and meaningfully print it as self-sufficient log-type entries?

This wiki contains information that goes past the readme, namely:

• Installation
• Command line options
• Input formats
• Supported RDS features
• Use cases

And some discussion on Redsea internals:

• Benchmark results
• JSON object order
• RDS clock recovery from pilot tone?
• Rx timestamps
• Some RadioText research