Long wave is a range of radio waves which are used for broadcasting.
...broadcasting on long wave.
...1500m on long wave.
long wave in British English
or long-wave
noun
a.
a radio wave with a wavelength greater than 1000 metres
b.
(as modifier)
a long-wave broadcast
Abbreviation: LW
long-wave in British English
(ˈlɒŋˌweɪv)
modifier
radio
using long wave
long-wave radio
▶ USAGE The abbreviation for long-wave is LW
long wave in American English
an electromagnetic wave that is longer than those used in commercial broadcasting, usually a radio wave longer than 1,000 meters and below 300 kilohertz in frequency
Derived forms
long-wave (ˈlong-ˌwave)
adjective
Examples of 'long wave' in a sentence
long wave
For this reason I shall call them simply long waves.
Sanderson, Stephen K. Macrosociology: An Introduction to Human Societies (1995)