High frequency
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High frequency is the ITU designation for the band of radio waves with frequency between 3 and 30 megahertz. It is also known as the decameter band or decameter wave as its wavelengths range from one
A modern Icom M700Pro two-way radio for marine HF radio communications.
An amateur radio station incorporating two HF transceivers.
A typical Yagi antenna used by a Canadian radio amateur for long distance communication
Boeing 707 used a HF antenna mounted on top of the tail fin
Shortwave radio
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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
High frequency
…medium frequency (MF), while the next band of higher frequencies is known as the very high frequency (VHF) band. The HF band is a major part of the shortwave band of frequencies, so communication at these frequencies is often called shortwave radio. Because radio waves in this band can be reflected back to…
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