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| radar head | |||
| radar; primary radar | |||
| radiodetection and ranging | |||
| radar A system using beamed and reflected radiofrequency energy for detecting and locating objects, measuring distance or altitude, navigating, homing, bombing and other purposes | |||
| radar apparatus | |||
| tutka: 32 phrases in 5 subjects |
| Communications | 20 |
| Electronics | 4 |
| Mechanic engineering | 2 |
| Radio | 5 |
| Technology | 1 |