Crystal radio circuit

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a wooden shelf with two white cups on top of it and some wires attached to the wall

The Hobbytech Crystal Radio Page features Jim Frederick's Antique Crystal radios and the many Crystal Sets he has built, along with technical information, antenna tips, circuit diagrams, and resources for learning more about building your own crystal radio that does not require batteries or a power source to receive broadcast signals.

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two rolls of electrical wire with words on them

Crystal radio science project: investigate how to build your own AM radio using a kit, and see how changing the radio configuration can allow you to tune in to different stations

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an electronic circuit with the words crystal locked fm transitter on top of it

The circuit presented here uses a crystal oscillator and frequency multiplier to generate a highly-stable carrier signal frequency of 96MHz. It can be used to transmit voice or music up to hundred meters. The circuit is built around 9018 transistor, 24MHz crystal, air coil and a few other basic components.

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an assortment of motor parts sitting on top of a wooden table next to green plants

Crystal Radio with Selenite Crystal on circuit board. This crystal radio design will actually pulse wave, due to the circuit placement of the earphones with the user and the circuit design flow.

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