Today, "high frequency" radio is defined as beginning at three megahertz--or three thousand
kilocycles per second (kcs), in the parlance of the 1920s.
Thus one station is on 990
kilocycles, another on 1000, and another on 1,010
kilocycles.
electromagnetic radiations between 10
kilocycles and 100,000 megacycles,
The station was licensed at 500 watts of power for an "unlimited" broadcast time at 360 meters (834
kilocycles) ("History," 1933; Frost, 1937).
I push a button, and for 20 minutes the device sends 10,000
kilocycles per second into my bone fracture.