What is the frequency band and range of a DME?

The frequency band for a Distance Measuring Equipment (DME) is established to operate between 960 to 1215 megahertz (MHz), which is a designated frequency range used globally for this type of navigation aid. The DME allows aircraft to determine their distance from a ground-based station through the use of transponders that send and receive signals.

In terms of range, DME can provide accurate distance information up to about 300 nautical miles (NM) from the station. This capability is critical for pilots during approach and departure phases, as well as for en-route navigation, ensuring they can maintain situational awareness and adhere to airspace regulations effectively.

The frequency and range specified in the other options do not align with the established parameters for DME. Understanding the operational band and range for DME is essential for pilots and aviation professionals as it aids in safe navigation and communication within controlled airspace.