Question

crystal radi definition​

Answer 1

Explanation:

A crystal radio receiver, also called a crystal set, is a simple radio receiver, popular in the early days of radio. It uses only the power of the received radio signal to produce sound, needing no external power. ... They were first used as a demodulator for radio communication reception in 1902 by G. W. Pickard.

Answer 2

Answer:

A crystal radio receiver, also called a crystal set, is a simple radio receiver, popular in the early days of radio. It uses only the power of the received radio signal to produce sound, needing no external power. They were first used as a demodulator for radio communication reception in 1902 by G. W. Pickard.