Ham radio, also known as amateur radio, is a popular hobby and a service that allows licensed individuals to operate two-way radio communications for personal, non-commercial purposes.
Amateur radio operators, called "ham radio operators" or simply "hams," use designated radio frequencies to communicate with other hams locally, regionally, nationally, and even internationally. These communications can take various forms, including voice transmissions, Morse code (telegraphy), digital modes, and data transmissions.
One of the distinguishing features of ham radio is its diverse range of activities. Hams can engage in regular conversations, participate in contests, conduct experiments, provide emergency communication services during disasters, communicate with astronauts aboard the International Space Station (ISS), and explore cutting-edge technologies such as software-defined radio (SDR) and digital signal processing (DSP).
To become a ham radio operator, one needs to obtain an amateur radio license from the regulatory authority in their country, such as the Federal Communications Commission (FCC) in the United States. Licensing involves passing an examination that tests knowledge of radio regulations, operating practices, and basic electronics. Different license classes may have varying privileges and operating frequencies.
Ham radio is known for its spirit of self-training, technical exploration, and public service. It fosters a sense of community among operators and provides an avenue for lifelong learning, experimentation, and friendship. It continues to be a popular hobby worldwide, attracting people from diverse backgrounds and age groups who share a passion for radio communications and technology.