Page "Frequency allocation" Paragraph 35

The range of " radio frequencies " is a matter of international convention.

The separation of countries into the three formal ITU RF allocation regions is one source of different RF allocation policies in different parts of the world.

The definition of the ITU Regions is based largely on longitude.

According to ITU Radio Regulations section 5. 1: Member States assign licenses to stations ; article 5 of the ITU regulations allocates frequencies to services ( such as broadcasting and mobile ).

The ITU divides the world into five administrative regions: