ABSTRACT
This chapter provides an overview of terrestrial frequency allocations and a listing of the frequencies available for amplitude modulated, frequency modulated, and TV broadcast stations, as well as for the "auxiliary" broadcast services that support broadcasting operations. Aural broadcast auxiliary stations include studio-to- transmitter link, intercity relay, and microwave booster stations used by radio broadcast stations. At the international level, frequency allocation decisions are made by the International Telecommunication Union, a specialized agency of the United Nations headquartered in Geneva, Switzerland. Radiocommunication Assemblies are held in conjunction with and prior to the World Radio Conferences (WRCs) and provide the technical basis for the work of the WRC. The allocation of radiofrequency spectrum occurs as a result of a series of interrelated decisions. Spectrum for use domestically must be allocated by Federal Communications Commission rulemaking proceedings. In the United States, amplitude-modulated stations operate with carrier frequencies in the center of channels assigned every 10 kHz.
