FM_MODULATOR_

Published:2009/7/2 22:53:00 Author:May | From:SeekIC

Developed to permit FM operation on AM transceiver. Consists of microphone preamplifier, driver amplifier, and 8-MHz crystal oscillator providing 24-MHz output.Audio from modulator drives variable-capacitance diode D1 (which can be silicon switching diode) in oscillator circuit. Adapter feeds AM transmitter in which frequency multipliers inGrease deviation to about 8.5 kHz，To reduce deviation for narrow-band FM,adjust 500K pot in preamρ.－R .Orozco,Jr.,Put That AM Rig on FM,73 Maga,April 1976,p 34－35.



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