STEM at Home: Crystal Radio

Explore how to make a simple crystal radio. With or without the listed supplies, you can find out about this cool device!

Supplies:

1.Toilet paper tube

2. 70 feet of magnet wire sized between 26 and 22 gauge

3. Piece of wood or cardboard about 12"x9'

4. Wire for antenna and ground

5. Tape

6.Diode (1N34A or 1N270)

7. Earphone for crystal radio (piezo or high impedance)

8. Sand paper

9. Wire stripper

10. Fine tip marker