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Random Noise Reduction by Repeated Transmissions of a Single Picture 25 Averages
of a Single Picture 50 Averages
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30-sec lock-out circuit 60-sec hold circuit amplitude modulated approximately bias breadboard camera unit capacitor Carrier Erase carrier frequency circuit restores coil coincidence pulse composite video composite video signal control circuitry cyc/in damping dc playback motor discriminator electronics Filter flutter flux-responsive FM Modulator frequency modulation functional high output tape horizontal in./sec initiated input Jet Propulsion Laboratory Juno IIB limiter load current Lunar magnetic heads magnetic tape Motor Control System msec Neg'ator Spring Motor one-shot operation output stage Packard Bell packing density phase photoconductive picture quality Pilot Oscillator pilot signal pilot tone playback mode played back positive pulse prerecorded Propulsion Laboratory Fig record-playback Recording current reference oscillator requirements reset shown in Fig shutter Signal return square wave supply tape release solenoid tape speed tape transport mechanism target electrode technique tests torque transistors trigger amplifier Vertical sweep vestigial sideband modulation video information Vidicon camera