About: Chain Home Low

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Chain Home Low (CHL) was the name of a British early warning radar system operated by the RAF during World War II. The name refers to CHL's ability to detect aircraft flying at altitudes below the capabilities of the original Chain Home (CH) radars, where most CHL radars were co-located. CHL could reliably detect aircraft flying as low as 500 feet (150 m). The official name was AMES Type 2, referring to the Air Ministry Experimental Station at Bawdsey Manor where it was developed, but this name was almost never used in practice.

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  • السلسلة الرئيسية المنخفضة (CHL) هو اسم نظام رادار للإنذار المبكر البريطاني الذي يديره سلاح الجو الملكي البريطاني خلال الحرب العالمية الثانية. يشير الاسم إلى القدرة على اكتشاف الطائرة التي تحلق على ارتفاعات أقل من إمكانيات أجهزة الرادار السلسلة الرئيسية، حيث كانت معظم الرادارات موجودة في نفس المكان. يمكن للنظام اكتشاف الطائرات التي تحلق على ارتفاع يصل إلى 500 قدم (150 م). كان الاسم الرسمي هو AMES Type 2، ولكن هذا الاسم لم يستخدم أبدًا عمليا. (ar)
  • Chain Home Low (CHL) was the name of a British early warning radar system operated by the RAF during World War II. The name refers to CHL's ability to detect aircraft flying at altitudes below the capabilities of the original Chain Home (CH) radars, where most CHL radars were co-located. CHL could reliably detect aircraft flying as low as 500 feet (150 m). The official name was AMES Type 2, referring to the Air Ministry Experimental Station at Bawdsey Manor where it was developed, but this name was almost never used in practice. The system had originally been developed by the British Army's research group, also based at Bawdsey, as a system for detecting enemy shipping in the English Channel. It was built using the electronics being developed for the Airborne Interception radar systems, which worked on the 1.5 m band. This high-frequency (200 MHz), for the era, allowed it to use smaller antennas that could be swung back and forth to look for returns, in contrast to the enormous fixed antennas of the 6.7 m wavelength (45 MHz) Chain Home system. When the war began, the Luftwaffe began mine-laying missions where the bomber aircraft would fly almost all of their mission at low altitude. Chain Home could only see targets above 1.5 degrees over the horizon, so these aircraft only became visible at short range. Robert Watson Watt seized several dozen of the CD systems that were in final construction and installed them at CH stations and key locations along the seashore to fill this critical gap in the coverage. CHL remained an important part of the Chain network for the rest of the war, and was retained in the post-war era until it was replaced during the ROTOR upgrades by the AMES Type 80. The electronics, notably the high-power transmitter, was also re-used in a number of other systems, including the AMES Type 7. (en)
  • La Chain Home Low (CHL), est le nom du système britannique de radar d’alerte complémentaire utilisé par la Royal Air Force durant la Seconde Guerre mondiale. Le nom fait référence à la capacité des radars à détecter les aéronefs volant à des altitudes inférieures aux capacités des radars Chain Home d'origine et la plupart des radars de la CHL étaient co-localisés. Le réseau pouvait détecter de manière fiable les aéronefs volant à une altitude inférieure à 150 m. Le nom officiel était AMES Type 2 et faisait référence à la station expérimentale du ministère de l'Air à Bawdsey Manor, où elle avait été développée, mais ce nom n'a presque jamais été utilisé dans la pratique. (fr)
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  • 1.500000 (xsd:double)
dbp:caption
  • Chain Home Low station at Hopton-on-Sea (en)
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dbp:frequency
  • 200.0 (dbd:megahertz)
dbp:name
  • Chain Home Low (en)
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  • 100 (xsd:integer)
dbp:otherNames
  • AMES Type 2, CD Mark I (en)
dbp:power
  • 150.0 (dbd:kilowatt)
dbp:prf
  • 400.0 (dbd:hertz)
dbp:pulsewidth
  • 3.0 (dbd:microsecond)
dbp:rpm
  • Up to 3.3 (en)
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  • السلسلة الرئيسية المنخفضة (CHL) هو اسم نظام رادار للإنذار المبكر البريطاني الذي يديره سلاح الجو الملكي البريطاني خلال الحرب العالمية الثانية. يشير الاسم إلى القدرة على اكتشاف الطائرة التي تحلق على ارتفاعات أقل من إمكانيات أجهزة الرادار السلسلة الرئيسية، حيث كانت معظم الرادارات موجودة في نفس المكان. يمكن للنظام اكتشاف الطائرات التي تحلق على ارتفاع يصل إلى 500 قدم (150 م). كان الاسم الرسمي هو AMES Type 2، ولكن هذا الاسم لم يستخدم أبدًا عمليا. (ar)
  • La Chain Home Low (CHL), est le nom du système britannique de radar d’alerte complémentaire utilisé par la Royal Air Force durant la Seconde Guerre mondiale. Le nom fait référence à la capacité des radars à détecter les aéronefs volant à des altitudes inférieures aux capacités des radars Chain Home d'origine et la plupart des radars de la CHL étaient co-localisés. Le réseau pouvait détecter de manière fiable les aéronefs volant à une altitude inférieure à 150 m. Le nom officiel était AMES Type 2 et faisait référence à la station expérimentale du ministère de l'Air à Bawdsey Manor, où elle avait été développée, mais ce nom n'a presque jamais été utilisé dans la pratique. (fr)
  • Chain Home Low (CHL) was the name of a British early warning radar system operated by the RAF during World War II. The name refers to CHL's ability to detect aircraft flying at altitudes below the capabilities of the original Chain Home (CH) radars, where most CHL radars were co-located. CHL could reliably detect aircraft flying as low as 500 feet (150 m). The official name was AMES Type 2, referring to the Air Ministry Experimental Station at Bawdsey Manor where it was developed, but this name was almost never used in practice. (en)
rdfs:label
  • Chain Home Low (en)
  • السلسلة الرئيسية المنخفضة (ar)
  • Chain Home Low (fr)
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