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Wide use in the Amateur radio [13] [14] community at +12 VDC (13.8 VDC) for emergency power and mobile radio use. Used by Warn brand of automotive winches at +12 VDC (13.8 VDC) power to the winch motor. Sometimes used by outdoor enthusiasts for +12 VDC (13.8 VDC) battery charging, especially with photovoltaic panels. Some model railroads at +12 ...
James Millen (amateur radio call sign W1HRX) in Massachusetts was in charge of the mechanical design. According to several accounts, Herbert Hoover, Jr. (amateur radio call sign W6ZH), son of U.S. President Herbert Hoover , and Howard Morgan (of Western Electric ) designed the electronics in Hoover's garage in Pasadena, California . [ 1 ]
An amateur radio license is valid only in the country where it is issued or in another country that has a reciprocal licensing agreement with the issuing country. [42] [43] In some countries, an amateur radio license is necessary in order to purchase or possess amateur radio equipment. [44]
Female sockets were installed on the power supply and male sockets (with exposed pins) on the radio equipment. Cable assemblies with mating connectors were also readily available. These connections transferred anode positive voltage (typically 600 VDC for Heathkit, 800 VDC for Collins), grid negative bias (−130 VDC), 6.3 and 12.6 VAC for ...
Amateur radio repeaters may even use commercially packaged repeater systems that have been adjusted to operate within amateur radio frequency bands, but more often amateur repeaters are assembled from receivers, transmitters, controllers, power supplies, antennas, and other components, from various sources.
FCC amateur radio station license of Al Gross. In the United States, amateur radio licensing is governed by the Federal Communications Commission (FCC). Licenses to operate amateur stations for personal use are granted to individuals of any age once they demonstrate an understanding of both pertinent FCC regulations and knowledge of radio station operation and safety considerations.
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