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Type 84

Description of the radar set, tactical-technical characteristics

Figure 1: Type 84

Figure 1: Type 84

Specifications
frequency: L-Band
pulse repetition time (PRT):
pulse repetition frequency (PRF): 250 Hz
pulsewidth (τ): 10 µs
receive time:
dead time:
peak power: 2.5 MW
average power:
instrumented range: 240 km
range resolution:
accuracy:
beamwidth:
hits per scan:
antenna rotation: 4 min-1
MTBCF:
MTTR:

Type 84

The Type 84 is an operating in L-Band stationary surveillance radar. The transmitter used a magnetron. The main transmitter was located in a single-storied building above which the antenna was mounted.

The antenna was designed as two 60' × 21' 8" elliptical parabolic antennas placed back-to-back, one as primary radar and the other as IFF/secondary radar system. The primary radar antenna generated a stacked-beam cosecant squared antenna pattern with 8 horn radiators. However, the IFF system originally intended for this antenna was never installed. More modern systems with much smaller antennas were installed, either as a horizontal beacon below the horn radiators or as a parabolic reflector antenna above the main antenna.