The Pacific War Online Encyclopedia
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| Wavelength | 10 cm |
| Pulse Width |
0.7, 1.5, or 1.9 microsecond |
| Pulse repetition
frequency |
500 Hz |
| Scan rate |
18 rpm |
| Power |
500 kW |
| Range | 15 nautical miles (30 km) on aircraft at 10,000 feet (3000
meters) 12 nautical miles (20 km) on aircraft at 5000 feet (1500 meters) 10 nautical miles (18 km) on aircraft at 1000 feet (300 meters) 17 nautical miles (31 km) on battleship 12 nautical miles (22 km) on destroyer 4 nautical miles (7 km) on submarine |
| Accuracy |
50 yards/0.5 degrees 45 meters/0.5 degrees |
| Antenna |
Tilted single cheese |
| Scope |
A scope |
| Production |
From 1945 |
The Type 293 was a British
naval fire control radar based on the Type 276.
used for target designation and optimized for
accuracy. It was autorotating and was equipped with a PPI
display. The antenna was somewhat larger, producing a narrower beam, and
was tilted 15 degrees from the horizontal to reduce sea return. Type
293M, which went into service as the war was winding down, had an even
larger antenna (8' or 2.4 meters) for an even narrower and more
sensitive beam, and had enough range to function as a search radar.
The Type 293 was usually equipped with the Mark 2 Target Indication
Unit, which projected three bearing lines on the PPI. These could be
manually adjusted to move onto a return on the PPI, and the
corresponding bearing was transmitted to the appropriate weapon. The
unit also had a ranging element that could transmit two separate ranges.
Visual bearings could be entered into the TIU-2 manually.
References
The Pacific War Online Encyclopedia (c) 2008 by Kent G. Budge. Index
