What is the carrier frequency for the Marker Beacon?

What is the carrier frequency for the Marker Beacon?

• A. 50 MHz
• B. 75 MHz
• C. 100 MHz
• D. 150 MHz

Answer: (B)

The carrier frequency for the Marker Beacon is 75 MHz. This frequency is specifically designated for marker beacons, which are used in aviation to provide navigation aids during approaches to runways or final descent to landing. Marker beacons emit a signal that is picked up by receivers in aircraft to indicate specific points along the approach slope, such as the Outer Marker, Middle Marker, and Inner Marker. The choice of 75 MHz for this application is part of the Band III in the VHF range, which is well-suited for line-of-sight communication, allowing pilots to receive reliable signals as they approach the runway. Using this frequency helps ensure that the signal is within the appropriate range to be effectively utilized by aircraft systems designed to recognize and react to these markers during critical phases of flight.

The carrier frequency for the Marker Beacon is 75 MHz. This frequency is specifically designated for marker beacons, which are used in aviation to provide navigation aids during approaches to runways or final descent to landing.

Marker beacons emit a signal that is picked up by receivers in aircraft to indicate specific points along the approach slope, such as the Outer Marker, Middle Marker, and Inner Marker. The choice of 75 MHz for this application is part of the Band III in the VHF range, which is well-suited for line-of-sight communication, allowing pilots to receive reliable signals as they approach the runway.

Using this frequency helps ensure that the signal is within the appropriate range to be effectively utilized by aircraft systems designed to recognize and react to these markers during critical phases of flight.