DME operates on which frequency spectrum?

Distance Measuring Equipment (DME) operates in the UHF frequency spectrum, specifically in the 962 to 1213 MHz range. This spectral range is designated for aviation use, allowing for the precise measurement of distance between an aircraft and a ground-based station. The UHF frequencies are advantageous for DME operation because they provide a good balance between range and accuracy, as well as resilience to atmospheric interference.

In the context of air traffic control, UHF allows the DME to function effectively alongside other navigation aids such as VOR and ILS, enabling pilots and air traffic controllers to maintain situational awareness regarding the aircraft's position relative to specific navigation points. This precision is crucial for en-route navigation and during approaches to airports.