Kilohertz is a term used to measure frequencies in sound and radio waves. It means "thousands of cycles per second." It tells us how fast a sound wave is vibrating or how many times a radio wave oscillates within a second. Full definition
The large size of the club head compared to traditional drivers meant it radiated the 2 - 3 kilohertz range very effectively, Russell said. (sciencedaily.com)
Throughout September, the local radio station in the Oise region to the north of Paris is overlaying its programmes with a 16 - kilohertz signal inaudible to the human ear. (newscientist.com)
That was the 50 - kilohertz chirp [at a pitch far above the range of human hearing]. (discovermagazine.com)