The standard band of signal frequency (usually expressed in Herz/Hz) for transmitting broadcast signals in radio, television and wireless communicators. Broadcast: Technically a program that is transmitted via radio-frequency signal to receiving locations such as televisions or radios. Generally used to refer to publicly available television and radio programming, as distinct from narrowly available programming such as a teleconference from an office to a convention site. Commonly, but incorrectly, used to refer to any program that is received via television or radio