Noun
a radio wave with a wavelength longer than a kilometer (a frequency below 300 kilohertz)
Source: WordNetHistory Development Radio Amateurs carried out the first short wave transmissions over a long distance before Guglielmo Marconi Early radio telegraphy had used long wave transmissions. Source: Internet
It was also difficult to beam the radio wave directionally with long wave, resulting in a major loss of power over long distances. Source: Internet
The impact of technological innovation on aggregate output is mediated through a succession of relationships that have yet to be explored systematically in the context of long wave. Source: Internet
The term long wave originated from a poor early translation of long cycle from Russian to German. Source: Internet