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History of amateur radio An amateur radio station in the United Kingdom. Multiple transceivers are employed for different bands and modes. Computers are used for control, datamodes, SDR and logging. 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.
As with radio in general, amateur radio was associated with various amateur experimenters and hobbyists. Amateur radio enthusiasts have significantly contributed to scienceengineeringindustryand social services. Amateur writing by amateur operators has founded new industries,  built economies,  empowered nations,  and saved lives in times of emergency.
Etymology of ham radio The term "ham" was first a pejorative term used in professional wired telegraphy during the 19th century, to mock operators with poor Morse code sending skills " ham-fisted ". The use of "ham" meaning "amateurish or unskilled" survives today in other disciplines "ham actor".
The amateur radio community subsequently began to reclaim the word as a label of pride,  and by the midth century it had lost its pejorative meaning. Although not an acronym, it is often mistakenly written as "HAM" in capital letters.
Activities and practices[ edit ] The many facets of amateur radio attract practitioners with a wide range of interests. Many amateurs begin with a fascination of radio communication and then combine other personal interests to make pursuit of the hobby rewarding.
Some of the focal areas amateurs pursue include radio contestingradio propagation study, public service communicationtechnical experimentationand computer networking.
Amateur radio operators use various modes of transmission to communicate. The two most common modes for voice transmissions are frequency modulation FM and single sideband SSB.
FM offers high quality audio signals, while SSB is better at long distance communication when bandwidth is restricted. Although computer-based digital modes and methods have largely replaced CW for commercial and military applications, many amateur radio operators still enjoy using the CW mode—particularly on the shortwave bands and for experimental work, such as earth-moon-earth communicationbecause of its inherent signal-to-noise ratio advantages.
Morse, using internationally agreed message encodings such as the Q codeenables communication between amateurs who speak different languages. It is also popular with homebrewers and in particular with "QRP" or very-low-power enthusiasts, as CW-only transmitters are simpler to construct, and the human ear-brain signal processing system can pull weak CW signals out of the noise where voice signals would be totally inaudible.
A similar "legacy" mode popular with home constructors is amplitude modulation AMpursued by many vintage amateur radio enthusiasts and aficionados of vacuum tube technology. Following changes in international regulations incountries are no longer required to demand proficiency. Specialized digital modes such as PSK31 allow real-time, low-power communications on the shortwave bands.
EchoLink using Voice over IP technology has enabled amateurs to communicate through local Internet-connected repeaters and radio nodes,  while IRLP has allowed the linking of repeaters to provide greater coverage area.Aug 16, · This section is dedicated to amateur and casual writers who wish to post their work on the forum.
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DeviantArt is the world's largest online social community for artists and art enthusiasts, allowing people to connect through the creation and sharing of art. The 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.
These services present an opportunity for self-training, intercommunication, and technical investigations. The amateur and.