THREE_TONE_H_F_CONTROLS_TRANSMITTER_

Published:2009/7/22 21:24:00 Author:Jessie | From:SeekIC

Tone-modulated ground transmitter can be tone-modulated by three different tones, each corresponding to a particular reed of receiving relay and balloon. Consists of three stable audio oscillators (between 200 and 500 cps) and low-power crystal-controlled transmitter in h-f band between 3 and 18 Mc.-R. W. Frykman, Radio Command Set for High. Altitude Balloons, Electronics, 33:35, p 54-55.



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