The Handbook on Radio Frequency Spectrum Requirements for Civil Aviation is an in-depth resource that provides technical guidance and regulatory information on radio frequency spectrum requirements for civil aviation. The manual covers a wide range of issues, including frequency allocation, radio communication systems, navigation systems, and surveillance systems. It is designed for use by civil aviation authorities, air navigation service providers, aircraft operators, and other stakeholders involved in the civil aviation use of the radio frequency spectrum. The handbook’s goal is to ensure that the radio frequency spectrum is used in the aviation sector in a safe, efficient, and effective manner.