band

A specific range of frequencies. Usually smaller and more specific than what’s referred to by spectrumA range of frequencies. A prism shows a range, or spectrum, of visible light frequencies (yes, light is a wave). This is the literal definition of spectrum. Other uses – like references to the autism spectrum use the word figuratively to indicate a continuous range. In our context, this refers to the range of radio frequencies available for communication. Access to those frequencies is usually regulated by governments since they're viewed as a public asset.. You would refer to the AM radio band, not the AM radio spectrum. That’s where CB – Citizens’ Band – comes from.