Description of the radar set, tactical-technical characteristics
Figure 1: “Cheese antenna” of the radar Type 268 B
|frequency:||9 320 … 9 475 MHz
|pulse repetition time (PRT):|
|pulse repetition frequency (PRF):||500 Hz|
|pulsewidth (τ):||0.75 µs|
|peak power:||30 kW|
|average power:||15 W|
|instrumented range:||30 NM (≙ 55 km)|
|range resolution:||100 m|
|hits per scan:|
|antenna rotation:||22 min⁻¹|
Type 268 was operating in X-Band search, navigational and target-indication radar developed in Canada for the British Admiralty in 1944. It permitted detection of a battleship at 9 NM and a submarine snorkel at 3 NM. Since 1945 the radar was installed in coastal forces.
The antenna was of the “Cheese antenna” type, 30-inches wide × 6.25-inches high, fed by waveguide and horn, not stabilized against pitch and roll. The transmitter used a magnetron of type 725A.