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In the year 1820 Hans Christian discovered that there was a relationship between electricity and magnetism. He conducted an experiment with a wirethat carried a current was able to deflect a magnetized compass needle
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The titanic used a radio. If they hadnt then all of the people would have died. Luckily not all did.
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All U.S. radio stations not needed by the government are closed as WWI begins. Sometimes the enemy could pick up a signal from the use of a radio
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Radio made is money by having broadcast aired for apartments for $50.
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Was Established in 1927 and it organized licensing of transmittors and assigned radio stations frequencies, call letters and power limits
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By the 1930s the golden era had become the turn of the century. Mickey Mouse was first drawn and radios had become very popular
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Cellular radio telephony, with call handoff and frequency reuse, was conceived at Bell Laboratories.
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The FCC reallocated TV channels 70-83 for mobile radio services. Which Happened to play a big role in the involvment of technology
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By the 1980s the record; also known as gramophone, had been a method used to listen to music on.
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The FCC permitted spread spectrum, the technology of choice for many of today’s digital, commercial cellular and PCS services.
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In 1996 The USA patent issued Mp3 players.
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Am waves measure the amplitude modulation
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Fm Waves measure the Frequency Modulation
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the entire family can enjoy a radio.
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iPhones Were made with a radio. They can use hundreds of different stations to isten to any kind of music
