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Description of the radar set, tactical-technical characteristics

Figure 1: Antenna of SCR-627

frequency: 200 MHz
pulse repetition time (PRT):
pulse repetition frequency (PRF):
pulsewidth (τ):
receive time:
dead time:
peak power: 225 kW
average power:
instrumented range: 280 km
range resolution:
hits per scan:
antenna rotation:


SCR-627 was a medium-range stationary early warning radar operating in the VHF-Band

The antenna had dimensions of 10 × 10 m and was erected on a reinforced concrete foundation. It consisted of two superimposed antenna arrays, each with four rows of 6 dipoles in front of a common grid reflector. The phase difference of the echo signals from both antenna arrays was used to measure an elevation angle.

The radar used two PPI-scopes and a special HR-scope (height-range scope) for display. For power supply, two gasoline generator sets (one spare) of 25 kVA each were used.