AM transmitter circuit diagrams

Bug Detector

This circuit can be used to "sweep" an area or room and will indicate if a surveillance device is operative. The problem in making a suitable detector is to get its sensitivity just right; too much and it will respond to radio broadcasts, too little sensitivity and nothing will be heard.

AM Transmitter

An AM voice transmitter with variable tuning. The antenna circuit is also tuned and transmits via a long wire antenna.

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