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ELECTRONS PAINT A PICTURE
6 other sections not shown
accurate airplane alternating voltage altimeter altitude amplifier base cathode cathode-ray tube channel coils detected determine device direction direction-finder distance earth echo pulses electric electron gun energy feet frequency frequency modulation glidepath ground-controlled approach interval ionosphere light waves line of position loran magnetron measured megacycles metal microseconds microwaves miles mitter modulation narrow beam navigation oscillator parabolic reflector pickup tube pilot plan-position indicator plane produce pulse power Pulse-position modulation pulses per second pulses sent radar antenna radar beam radar equipment radar indicator radar landing control radar operator radar pulse radar receiver radar set radar transmitter radio communication range-indicator Raytheon reflector rotates round-trip runway scanning screen short radio waves shown in Fig signal pulse sound waves space speed spot moves spot of light stream of electrons surface sweep synchronizing pulse tion trans transmission transmitter pulse types of radar viewing-screen voltage wave guide wavelengths