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Software Defined Radio: The Hobbyist's Guide
A small receiver and free software can open aircraft, satellite and public-safety signals to civilians — within limits the law sets.

A small receiver and free software can open aircraft, satellite and public-safety signals to civilians — within limits the law sets.

A subpoena is a court order, not a suggestion. Here is what the two types demand, who can issue them, and what contempt can mean.

The appeal runs on puzzle-solving, safety-at-a-distance and a sense of unfinished business — and it shapes what listeners expect from investigators and juries.

A long-form crime feature is not finished when the writing is done. Legal review, fact-checking and ethics decisions decide what readers finally see.