# Freya Radar **Entity class:** Technology **Research spine:** [[research/Chronology of Signals, Silos, and Sovereign Software - Research|Chronology of Signals, Silos, and Sovereign Software]] ## Definition Freya was the German long-range early-warning radar used as the search sensor in the Kammhuber Line. ## Chronological Proximity Thousands of Allied sorties in 1941–1943 encountered Freya while the [[wiki/Radio Research Laboratory|Radio Research Laboratory]] developed reconnaissance and jamming responses. ## Relational Proximity Freya cued [[wiki/Würzburg Radar|Würzburg]] tracking inside [[wiki/Himmelbett|Himmelbett]] cells and became a target for [[wiki/Carpet Jammers|carpet jammers]]. ## 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]].