A 1941 RAF PRU photograph of the two Freyas at Auderville

Freya radar was an early form of radar deployed by Germany during World War II, named after the Norse Goddess Freya. During the war over a thousand stations were built. Image File history File linksMetadata Auderville_Freyas. ... Image File history File linksMetadata Auderville_Freyas. ... M*A*S*H , see Corporal Walter (Radar) OReilly. ... Combatants Allies: Poland, British Commonwealth, France/Free France, Soviet Union, United States, China, and others Axis Powers: Germany, Italy, Japan, and others Casualties Military dead:17 million Civilian dead:33 million Total dead:50 million Military dead:8 million Civilian dead:4 million Total dead:12 million World War II... Freya, in an illustration to Wagners operas by Arthur Rackham. ...

First tests of what would become the "Freya" early warning radar were conducted in early 1937, with initial delivery of an operational radar to the Kriegsmarine in 1938. It appeared to receive a much lower priority than British radar until later in the war. The Freya radar was in fact much more sophisticated than the British Chain Home (CH) counterpart, and by operating in the 1.2 m wavelength (as opposed to ten times that for the CH) the Freya was able to be much smaller and yet offer better resolution. Yet by the start of the war only eight of these units were in operation, offering much less coverage. An early warning radar is any radar system used primarily for the long-range detection of its selected targets. ... 1937 (MCMXXXVII) was a common year starting on Friday (link will take you to calendar). ... The Kriegsmarine (or War Navy) was the name of the German Navy between 1935 and 1945, during the Nazi regime, superseding the Reichsmarine. ... 1938 (MCMXXXVIII) was a common year starting on Saturday (link will take you to calendar). ... Chain Home was the codename for the ring of coastal radar stations built by the British during World War II. The system comprised two types of radar: the metre-wave Chain Home stations which provided long-range early warning, and the centimetre-wave Chain Home Low stations, which were shorter...

Later in the war Freya operated in the band from 2.5 to 2.3 meters / 120 to 130 MHz, with a pulse width of 3 microseconds, a peak power output of 15 to 20 kW, and a PRF of 500 Hz. However it had a maximum range of only 160 kilometers (100 miles) and could not accurately determine altitude, making it inferior to CH in those respects, but it was a fully steerable and a mobile system. A megahertz (MHz) is one million (106) hertz, a measure of frequency. ... kW is a measure of power, kilowatt. ... PRF is an acronym and can stand for: Pain Relief Foundation Primitive recursive function - a class of functions which form an important building block on the way to a full formalization of computability pulse repetition frequency - a characteristic of a radar transmitter This is a disambiguation page — a navigational aid...

See also

• Würzburg radar
• List of World War II electronic warfare equipment