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Portable radar transponder
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Rebecca/Eureka was a WWII transponding radar system,
developed between
1940 and 1943 at the Telecommunications Research Establishment (TRE)
by Robert Hanbury Brown, John William Sutton Pringle and
Charles Bovill.
It was used for dropping of airborne forces and their supplies, and later
also for other purposes. The system consisted of two parts: and airborne
transceiver with two highly directional antennas (Rebecca) 1 and a
ground-based transponder (Eureka) 2 [1].
The Rebecca unit was basically an adaption of an existing ASV radar,
whilst the Eureka part was an all-new development. The portable Eureka
transponder was delivered to resistance groups in Europe from 1943 onwards,
after which it was used to guide airplaines (with a Rebecca unit) to
the dropping zones. This way, weapons and other supplies
were delivered to resistance fighters.
The units were manufactured in the UK from 1943 onwards.
The US Air Force followed slighly later with interchangeable units.
Apart from guiding droppings, the systems were also used for other purposes,
such as blind-bombing, airfield approach and blind-landing [1].
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The name Rebecca was derived form the phrase Recognition of beacons.
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The name Eureka is a Greek word which means I have found it!
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© Crypto Museum. Created: Saturday 31 December 2022. Last changed: Sunday, 01 January 2023 - 13:14 CET.
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