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PIERCE_TETRODE_TRANSISTOR

2016-05-06 22:54  
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PIERCE_TETRODE_TRANSISTOR
Tuned to third overtone of crystal fundamental. Fifth harmonic of oscillator is used as calibration frequency for c-w receiver of radio direction linden-A. T. Lloyd, Direction Finder Helps Recover Discoverer Capsule, Electronics, 34:9, p 42-45.