Amateurfunk

Amateurfunk, also known as amateur radio, is a hobby and service that uses allocated radio frequency bands for non-commercial personal communication, experimentation, and public service. Operated by licensed individuals known as radio amateurs, it encompasses a wide range of activities, from building and testing equipment to long-distance contacts and digital communications. World-wide regulation is coordinated by the International Telecommunication Union and implemented by national authorities, which grant licenses, assign callsigns, and determine permissible bands and power levels.

Historically, amateur radio emerged from early wireless experimentation in the late 19th and early 20th centuries. Enthusiasts organized societies, developed operating practices, and contributed to advances in radio technology. Today, licensing regimes typically require passing exams on rules, operating procedures, and basic electronics, with continuing education and testing for new privileges or modes.

Operations cover a spectrum of modes and bands. Voice communication is common on several modes, including single sideband and FM, while Morse code (CW) remains popular among some operators. Digital modes such as PSK31, FT8, and packet radio enable weak-signal work and data transmission. Amateurs may work from home stations, portable setups, or field operations, often with antennas ranging from simple dipoles to directional yagis and verticals. Power levels are limited by regulation and license class.

Amateur radio also serves public safety and emergency communications during disasters, providing trained volunteers and redundant communications when infrastructure is damaged. Communities organize around clubs, contests, and events that promote technology, education, and international goodwill. Major organizations include national societies and the International Amateur Radio Union.