1) when referring to (radio) broadcasting, includes frequencies ranging from 1.7 to 30 MHz (1700 - 30,000 kHz), but sometimes refers also to the HF frequency spectrum from 3 to 30 MHz
2) An adjective referring technically to radio waves shorter than 80 meters, corresponding to a frequency of 3.75 megahertz or more. The term is often loosely used to refer to HF frequencies.
3) In radio communications, pertaining to the band of frequencies approximately between 3 MHz and 30 MHz. Note: “Shortwave” is not a term officially recognized by the international community.
I listen to pirate radio stations on my shortwave radio.
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