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The history of amateur radio, dates from the dawn of radio communications, with published instructions for building simple wireless sets appearing at the beginning of the twentieth century. [1] Throughout its history, amateur radio enthusiasts have made significant contributions to science , engineering , industry , and social services .
Amateur radio, also known as ham radio, is the use of the radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and emergency communications. [1]
FM uses frequency modulation of the radio wave to minimize static and interference from electrical equipment and the atmosphere, in the audio program. 1937: W1XOJ, the first experimental FM radio station after Armstrong's W2XMN, was granted a construction permit by the U.S. Federal Communications Commission (FCC).
During the winter, everyone can agree that a hot bowl of chicken noodle soup really hits the spot. This year, Campbell's classic Chicken Noodle, the most famous chicken noodle soup on the planet ...
Vintage amateur radio is a subset of amateur radio hobby where enthusiasts collect, restore, preserve, build, and operate amateur radio equipment from bygone years, such as those using vacuum tube technology.
In addition to the above, there are other ham bands which are less commonly used for ATV: On the 13-centimeter band: 2.4175 GHz is used for ATV links. 2.4415 GHz is the band's most used FM ATV frequency. A 6.0 MHz audio sub-carrier and 4 MHz deviation are used. The 9 centimeter (3.4 GHz) and 5 centimeter (5.8 GHz) bands have ATV links in some ...
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The early history of radio is the history of technology that produces and uses radio instruments that use radio waves. Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as "wireless telegraphy". Later radio history increasingly involves matters of broadcasting.