Call sign
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In broadcasting and radio communications, a call sign is a unique identifier for a transmitter station. A call sign can be formally assigned by a government agency, informally adopted by individuals o
Russian nuclear icebreaker Arktika with call sign UKTY
A 1940 QSL card for WWV, indicating its early location in the U.S. state of Maryland
All U.S. states issue call sign license plates upon request for motor vehicles owned by amateur radio operators; this road vehicle is from California.
Department of Commerce callbook, 1919
Amateur radio
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Amateur radio, also known as Ham radio, is the use of specific bands and frequencies within the radio spectrum for non-commercial communication, technical experimentation, self-training, recreation, r
Call sign
…Britain has no call signs in the American sense, but allows broadcast stations to choose their own trade mark call sign up to six words in length. Amateur radio call signs are in the international series and normally consist of a one or two character prefix, a digit (which may be used to denote a geographical…
Amateur radio station with transceivers, amplifiers, and a computer for digital modes. On the wall are awards, certificates, and QSL cards from foreign stations
Polish amateur radio station SP1QE with a 1930s vacuum tube transmitter and receiver
An amateur radio station in Wales. Multiple transceivers are employed for different bands and modes. Computers are used for control, data modes, SDR, RTTY and logging.
Amateur operator with antennas in Åland