Saturday, November 2, 2019

TL431 IC audio amplifier used as QRP AM transmitter modulator

Video describes a magic little IC used as a QRP AM transmitter modulator. You can get good audio even without a modulation transformer.

PS: I've now written six books on various aspects of amateur radio. Whether you experiment with antennas, enjoy QRP or are starting out in radio there's a book for you. Find out more here.

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