1955-57 - West Germany - Lüneburg - Early Warning Radar
The PPI (Plan Position Indicator) in this instance is only 7 inches (17.7cm) in diameter. This display is the commonest of all - used not only by radar, but also by air traffic control, ship navigation, meteorology, etc. As a power source the 1B used a magnetron oscillator. The range is about 200 miles (321 km); as the crow flies, possibly less, about 170 miles, if that! The other screen (only 5 inches in diameter) measured the A (azimuth?) reading. The frequency used was 1220 to 1350 mc.
1955-57 - West Germany - Lüneburg - Early Warning Radar
The PPI (Plan Position Indicator) in this instance is only 7 inches (17.7cm) in diameter. This display is the commonest of all - used not only by radar, but also by air traffic control, ship navigation, meteorology, etc. As a power source the 1B used a magnetron oscillator. The range is about 200 miles (321 km); as the crow flies, possibly less, about 170 miles, if that! The other screen (only 5 inches in diameter) measured the A (azimuth?) reading. The frequency used was 1220 to 1350 mc.