Description of the radar set, tactical-technical characteristics
Figure 1: Type 85
|pulse repetition time (PRT):|
|pulse repetition frequency (PRF):||250 Hz|
|pulsewidth (τ):||10 µs|
|peak power:||8 MW|
|instrumented range:||300 NM (≙ 555 km)|
|hits per scan:|
|antenna rotation:||4 min⁻¹|
The AMES Type 85 was operating in S-Band long-range volumetric scan radar with 12 overlapping 1° vertical stacked beams. The radar was known as “Blue Yeoman” during development and was designed to “burn through” EW jamming.
The transmitter block used twelve liquid cooled klystron transmitters that each produced a peak power of 4.5 MW. In non jamming conditions only four transmitters were used, two operating as frequency diversity radar, the both others in stand-by for redundance. The transmitted pulse with a length of 10 microseconds was intrapulse modulated.