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See all on WikipediaAmateur radio - Wikipedia
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. The term "amateur" is used to … See more
The origins of amateur radio can be traced to the late 19th century, but amateur radio as practiced today began in the early 20th century. The First … See more
The many facets of amateur radio attract practitioners with a wide range of interests. Many amateurs begin with a fascination with radio … See more
Amateurs use a variety of voice, text, image, and data communications modes over radio. Generally new modes can be tested in the amateur radio service, although national … See more
• Bergquist, Carl J. (May 2001). Ham Radio Operator's Guide (2nd ed.). Indianapolis: Prompt Publications. ISBN 0-7906-1238-0 See more
Radio transmission permits are closely controlled by nations' governments because radio waves propagate beyond national … See more
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• 70-centimeter band (aka 440 MHz) See moreWikipedia text under CC-BY-SA license Amateur radio licensing in the United States - Wikipedia
WEBAmateur Radio licensing in the United States began in mid-December 1912. At first, the Amateur Second Grade license required the applicant to certify that he or she was …
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Amateur radio - Simple English Wikipedia, the free encyclopedia
WEBPeople who use Amateur radio are often called amateur radio operators, hams or amateurs. During a disaster or emergency, amateur radio can be used to get help. …
What is Amateur Radio? - International Amateur Radio Union …
WEBJan 27, 2020 · What is Amateur Radio? The amateur and amateur-satellite services are radiocommunication services defined in the Radio Regulations of the ITU.
What is Amateur Radio? - ARRL
WEBRadio amateurs, often called “hams,” enjoy radio technology as a hobby. But it's also a service –a vital service that has saved lives when regular communication systems failed. …
Amateur radio | Ham Radio, Antennas & Transceivers | Britannica
WEBApr 4, 2024 · Amateur radio is allocated frequency bands across the radio spectrum, from medium frequency (e.g., 1.8–2 megahertz) to ultrahigh frequency (up to 1300 …
ARRL - Home
WEBThe American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources.
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Amateur Radio - Engineering and Technology History Wiki - ETHW
WEBSep 6, 2017 · Amateurs are allocated nine basic “bands” (i.e,. groups of frequencies) in the High Frequency (HF) range between 1800 and 29,700 kHz, and another seven bands in …
Ham Radio History - ARRL
WEBAmateur Radio (Ham Radio) is a popular hobby and a service in which licensed participants operate communications equipment. Read More. Radio Equipment. W1AW. …
What is Amateur Radio? - Amateur Radio Wiki
WEBAug 20, 2014 · Amateur radio, also known as ham radio, is both a hobby and a service in which participants, called "hams," use various types of radio communications equipment …
History of Ham Radio - Ham Radio Planet
WEBThe fascinating history of ham radio can be traced back to the late 19th and early 20th centuries, when pioneers like James Clerk Maxwell and Guglielmo Marconi made …
WEBThe last few years of the 19th century set the stage for rapid development of commercial radio and established the foundations of Amateur Radio. There were numerous early …
ARRL | American Radio Relay League | About the League
WEBAbout ARRL. ARRL's Mission Statement: To advance the art, science, and enjoyment of Amateur Radio. ARRL is the national association for Amateur Radio in the US. …
What Is Amateur Radio? Getting Started With Amateur Radio
WEBJul 15, 2020 · Amateur radio is a radio that uses radio frequencies for noncommercial two-way communications. These radios are a crucial part of radio history, and they …
ARRL Fact Sheet
WEBThe American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources.
Amateur Radio Service | Federal Communications Commission
WEBThe amateur and amateur-satellite services are for qualified persons of any age who are interested in radio technique solely with a personal aim and without pecuniary interest. …
Radio Modes: Everything You Need to Know - Amateur Radio Wiki
WEBby Richard. The term mode has varying meanings, according to the context, but the most common are permitted modes in amateur licensing. Waves have three characteristics …
M17 (amateur radio) - Wikipedia, la enciclopedia libre
WEBGeneral. Espectrograma del protocolo M17. El tiempo está representado en el eje vertical, avanzando de abajo hacia arriba. Es visible un preámbulo de 40 milisegundos al …
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