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Type 79B consolidated the transmitting and receiving antennae into one and its detection range was increased to 90 nautical miles (170 km; 100 mi) for an aircraft at 20,000 feet (6,100 m). The radar also had a secondary ability to track a surface target at ranges from 2â6 nautical
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Improved versions, Type 79Y, were developed the following year that used a frequency of 43 MHz (7 metres). It required separate transmitting and receiving antennas and had a power output between 15 and 20 kW. The first set was installed in
September 1938 aboard the
143:, in October 1936. This equipment used a frequency of 75 MHz and a wavelength of 4 metres and its antennae were strung between the ship's masts. They detected an aircraft at an altitude of 500 feet (150 m) and a range of 17
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in
September 1939 and proved to be successful enough that forty more sets were ordered with the designation of Type 79. The antennae were manually rotated, but only enough wire was provided to rotate a maximum of 400°.
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and gave detection ranges up to 53 nautical miles (98 km; 61 mi) for an aircraft at 10,000 feet (3,050 m). A second set was mounted on the
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The first version of this radar, Type 79X, was mounted on the RN Signal School's tender, the
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Radar
Origins Worldwide: History of Its Evolution in 13 Nations Through World War II
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A Radar
History of World War II: Technological and Military Imperatives
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the following month, but it was not tested until
January 1939.
248:. Bristol and Philadelphia: Institute of Physics Publishing.
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A more powerful version, Type 79Z, was fitted to the
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126:. It was the first radar system deployed by the
284:Technical History of the Beginnings of Radar
189:miles (3.7â11.1 km; 2.3â6.9 mi).
362:Military equipment introduced in the 1930s
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327:The RN Radar and Communications Museum
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267:. London: Conway Maritime Press.
342:World War II British electronics
286:. London: IEE/Peter Peregrinus.
301:Watson, Raymond C. Jr. (2009).
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282:Swords, Sean S. (1986).
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22:Country of origin
244:Brown, Louis (1999).
231:Friedman, pp. 190â191
176:anti-aircraft cruiser
118:was a British naval
352:World War II radars
120:early-warning radar
55:Early-warning radar
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312:978-1-4269-2111-7
222:Swords, pp. 87â88
122:developed before
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357:Royal Navy Radar
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124:World War II
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265:Naval Radar
135:minesweeper
336:Categories
163:battleship
128:Royal Navy
89:Pulsewidth
32:Introduced
179:HMS
166:HMS
158:Sheffield
156:HMS
138:HMS
80:Beamwidth
61:Frequency
140:Saltburn
92:8-30 Ξs
17:Type 79
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181:Curlew
168:Rodney
64:43 MHz
193:Notes
108:70 kW
105:Power
97:Range
43:built
307:ISBN
288:ISBN
269:ISBN
250:ISBN
114:The
51:Type
35:1938
70:PRF
41:No.
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