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John Francis Rider (1900–1985) was an American radio engineer best known as publisher and author of over 125 books for radio and television servicing. He founded John F. Rider Publisher Inc. and was responsible for annual volumes of the Perpetual Troubleshooter's Manual from 1931 to 1954.
The Ship Radar Endorsement is required to repair, maintain or internally adjust ship radar equipment. It may, as an option, be added to the GROL. To qualify, one must: Hold or qualify for a GROL, GMDSS Radio Maintainer's License, First Class Radiotelegraph Operator's Certificate, or Second Class Radiotelegraph Operator's Certificate.
James Ernest Smith, founder of the National Radio Institute. The National Radio School was established in 1914 in Washington, D.C., by James Ernest Smith (1881–1973) and Emanuel R. Haas (1891–1947). 1 Smith was a teacher at McKinley Manual Training School (which was moved in 1926 to its final location now known as McKinley Technology High School).
Type 'C' Form 'A' twin detector crystal radio set, manufactured by British Thomson Houston Ltd. in 1924, kept at the Museum of the radio - Monteceneri (Switzerland) Early radio telegraphy used spark gap and arc transmitters as well as high-frequency alternators running at radio frequencies. The coherer was the first means of detecting a radio ...
William Ittner Orr (1919–2001) was an engineer, educator, communicator, and ham radio operator. [1] [2] [3] He was the American author of numerous amateur radio and radio engineering texts. He is best known as the author of The W6SAI Antenna Handbook [4] and fondly remembered for the 1959 Radio Handbook. [5]
Learn how to manage everything that concerns your AOL Account starting with your AOL username, password, account security question and more.
The AN/PRC-77 entered service in 1968 during the Vietnam War as an upgrade to the earlier AN/PRC-25.It differs from its predecessor mainly in that the PRC-77's final power amplifier stage is made with a transistor, eliminating the only vacuum tube in the PRC-25, as well as the DC-DC voltage converter used to create the high plate voltage for the tube from the 15 V battery.
Play free online Canasta. Meld or go out early. Play four player Canasta with a friend or with the computer.