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Description of the radar set, tactical-technical characteristics

Figure 1: AN/TPS-1E Antennenfahrzeug
(Courtesy Manfred Pahlkötter)

frequency: 1 220 … 1 350 MHz
pulse repetition time (PRT):
pulse repetition frequency (PRF): 360 … 380 … 400 Hz
pulsewidth (τ): 2.7 µs
receiving time:
dead time:
peak power: 500 kW
average power: 500 W
instrumented range: 160 miles
range resolution:
accuracy: Range: ±(3% + 1 NM)
beamwidth: 3.4 to 4 degrees
hits per scan:
antenna rotation: 1 … 15 rpm


The AN/TPS-1E was lightweight portable search radar developed during World War II to provide early warning of enemy air attacks. They were intended for short-range surveillance as gap-fillers and for the designaltion of targets for anti-aircraft units (e.g. NIKE Hercules units of German Bundeswehr). These radars were used until the 1990s.

The transmitter used a magnetron of type 5J26, that was keyed on/off by the modulator using a thyratron of type 5C22.

The AN/TPS-1 was developed by Bell Telephone laboratories from a wartime original through 'B' and 'C' variants. It was later manufactured by Western Electric; now p.o. Lockheed Martin. Some sets are manufactured under license by Microlambda (Italy), now Selex Sistemi Integrati.

Sources and ressorces:

  1. Galati Gaspare: ''100 Years of Radar'' Springer Verlag, 1st ed. 2016 (28. September 2015), ISBN 978-3-319-00583-6, S.205 (online preview)