# H2S Radar **Entity class:** Technology **Research spine:** [[research/Chronology of Signals, Silos, and Sovereign Software - Research|Chronology of Signals, Silos, and Sovereign Software]] ## Definition H2S was an Allied airborne ground-mapping radar used for navigation and target finding. ## Chronological Proximity Its wartime deployment was soon followed by German [[wiki/Naxos Radar Receiver|Naxos]] receivers that detected its emissions. ## Relational Proximity Its American derivative was [[wiki/H2X Radar|H2X]]; both show how an active sensor can become an involuntary beacon in [[wiki/Recursive Electronic Warfare|recursive electronic warfare]]. ## Collection Routes [[collections/The Civilian Intelligence Marketplace|The Civilian Intelligence Marketplace]] · [[collections/Terrorism, Counterterrorism, and the Intelligence Environment|Terrorism, Counterterrorism, and the Intelligence Environment]] · [[wiki/Signals, Silos, and Sovereign Software|Signals, Silos, and Sovereign Software]] ## Sources / Provenance - [[research/Chronology of Signals, Silos, and Sovereign Software - Research|Chronology of Signals, Silos, and Sovereign Software - Research]].