Tap into the signals in the skies

Are you ready to tap into the signals in the skies? Build a radio that functions without power from batteries or a wall outlet! The Detector Radio works like early crystal radios, allowing you to tune into radio stations using electromagnetic power.

Learn about HF coils, capacitors, resistors and diodes. Discover how antennae work and experiment to improve your reception.

Challenge yourself to pick up transmissions from far away. The simple design of the Detector Radio illustrates the basic principles behind all radio broadcasting.

Through 20 experiments in the full-color, 32-page Experiment Manual, learn about the necessary components of a radio and the role each one plays in bringing sound to your ear.