Shortwave radio
Videos
Shortwave radio is radio transmission using radio frequencies in the shortwave bands. There is no official definition of the band range, but it always includes all of the high frequency band, which ex
Grundig Satellit 400 solid-state, digital shortwave receiver, c. 1986
Radio amateurs carried out the first shortwave transmissions over a long distance before those of Guglielmo Marconi.
National Panasonic R3000 analog shortwave radio receiver, c. 1965
Portable shortwave receiver's digital display tuned to the 75–meter band
Amateur radio
Videos
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
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