Lu Snide: 'crystal sets" and they do NOT work on FM that takes a frequency shift detector, modernthe old radios basically listened to waves from "spark machines"like the static you get on a car radio if there is a bad power linethe first "crystal, or cat's whisker was a very early form of transistor diodeIt would be GREAT WAY TO LEARN RADIO . home radio operators are called HAMS and are still very important. find a club and meet some of the "old guys" they will be glad to teach youlearn about electro-magnetic radio spectrum or radio bands, antennas and AC systemsyou will have to learn "decimals and math, but it is easy...Show more
Edmund Rappley: With a police scanner all you can do is hear. That is not going to do you any good in an emergency. You wouldn't comprehend what used to be being said. A CB radio offers you the choice of listening and transmitting.
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