What is the frequency range for the Localizer carrier signal?

What is the frequency range for the Localizer carrier signal?

• A. 102-112 MHz
• B. 108-118 MHz
• C. 115-125 MHz
• D. 120-130 MHz

Answer: (B)

The Localizer is an essential component of an instrument landing system (ILS) used to guide aircraft during the approach phase of landing. Its carrier signal frequency operates within a specific range to ensure proper functionality and compatibility with onboard avionics systems as well as international standards. The frequency range for the Localizer carrier signal is defined as 108 to 118 MHz. This range was established to minimize interference with other aviation and communication frequencies, while still being well within the operating characteristics of aviation receivers. Using this frequency range allows for the transmission of the directional information needed for pilots to line up with the runway centerline effectively. The other choices fall outside of this specified range or overlap with frequencies assigned for other aviation services, which could lead to confusion or interference in navigation. Understanding the Localizer's frequency range is crucial for ensuring precision in aviation procedures and maintaining safety during flight operations.

The Localizer is an essential component of an instrument landing system (ILS) used to guide aircraft during the approach phase of landing. Its carrier signal frequency operates within a specific range to ensure proper functionality and compatibility with onboard avionics systems as well as international standards.

The frequency range for the Localizer carrier signal is defined as 108 to 118 MHz. This range was established to minimize interference with other aviation and communication frequencies, while still being well within the operating characteristics of aviation receivers. Using this frequency range allows for the transmission of the directional information needed for pilots to line up with the runway centerline effectively.

The other choices fall outside of this specified range or overlap with frequencies assigned for other aviation services, which could lead to confusion or interference in navigation. Understanding the Localizer's frequency range is crucial for ensuring precision in aviation procedures and maintaining safety during flight operations.