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Radio and Phone Speaker has Style

Building a crystal radio isn’t exactly rocket science. Some people who build them go for pushing them technically as far as they can go. Others, like , go for style points. 185 more words

Radio Hacks

Science lessons 21-24

Lesson 21 is the crystal radio project. A crystal radio is a radio that needs no electricity. Lesson 22 is the amplifier project. Lesson 23 is the AM transmitter project. 542 more words

Essay