Build your own metal detector
Earth Science Educational Materials
Natural Resources Learning Activities
Students make their own metal detector.
- Metal Detector Transmits in the AM Radio Bandwidth
- Detector Uses Oscillation Technology
- Detector Emits Tone When Metal Is Present
The metal detector functions as an oscillator that transmits in the AM radio band.
When a radio is placed near the oscillator, it will emit an audible tone when metal is present.