www.radartutorial.eu www.radartutorial.eu Card Index of Radar Sets - Ancient Radars


Description of the radar set, tactical-technical characteristics

Figure 1: AN/FPN-33

frequency: 9 000 … 9 160 MHz
pulse repetition time (PRT):
pulse repetition frequency (PRF): 1 500 Hz
pulsewidth (τ): 0.5 µs
receiving time:
dead time:
peak power: 50 kW
average power: 36 W
instrumented range:
range resolution:
beamwidth: β= 0.85°, ε= 2.5°
hits per scan:
antenna rotation:


AN/FPN-33 was an X-band ground controlled precise approach radar that utilizes two prime-fed parabolic reflector antennas (azimuth and elevation) with an antenna gain of 39 dB, and two modes of operation (surveillance and tracking/precision approach).

It is the predecessor of the AN/FPN-36 which was fitted with an MTI then. The technical data were nearly the same, except for the much higher pulse power (and the higher maximum range) of the successor.