kortvåg

Etymology
, cognate with 🇨🇬, used in Swedish at least since 1933. The adjective 'kortvågig' can be traced to 1872, compounds like 'kortvågsradio' to the mid 1920s, of which 'kortvåg' is a shorthand. Still in 1929, it was common to write 'korta vågor' (short waves), but 'kortvåg' became common in the 1930s.

Noun

 * 1)  shortwave, a range of the radio frequency spectrum from 3 to 30 MHz, its capability to convey signals
 * Och fram mot morgonen var fortfarande kortvågen mycket dålig
 * And towards daybreak the shortwave was still very poor
 * 1) a radio wave or electromagnetic signal in this range
 * kortvågor studsar på havsytan
 * shortwaves bounce on the ocean surface