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Radar Type 1

Description of the radar set, tactical-technical characteristics

Figure 1: Radar Type 1

Figure 1: Radar Type 1 antenna
© 1947 Kelvin Hughes

frequency: 9 425 … 9 525 MHz
pulse repetition time (PRT):
pulse repetition frequency (PRF): 1000 Hz
pulsewidth (τ): 0.2 µs
receiving time:
dead time:
peak power: 30 kW
average power:
instrumented range: 27 NM (≙ 50 km)
range resolution:
beamwidth: 1.8°
hits per scan:
antenna rotation: 30 rpm

Radar Type 1

In 1947 the very first civil Type 1 radar was produced by Kelvin Hughes and installed on a new fishing trawler. Its X-band transmitter was fitted with a magnetron. The radar echoes are shown on a PPI scope using magnetic deflected cathode ray tube.