In a VORTAC, which service provides distance (DME)?

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Multiple Choice

In a VORTAC, which service provides distance (DME)?

Distance information in a VORTAC comes from the TACAN portion through its DME function. The VOR part of a VORTAC provides the azimuth (bearings) to the station, but it does not give distance. The TACAN side handles the distance measurement, sending DME data that translates to the slant-range distance in nautical miles. GPS time has no role here, and TACAN azimuth is used by military receivers, not the civilian distance reading. So the service that provides the distance is the TACAN’s DME.

Distance information in a VORTAC comes from the TACAN portion through its DME function. The VOR part of a VORTAC provides the azimuth (bearings) to the station, but it does not give distance. The TACAN side handles the distance measurement, sending DME data that translates to the slant-range distance in nautical miles. GPS time has no role here, and TACAN azimuth is used by military receivers, not the civilian distance reading. So the service that provides the distance is the TACAN’s DME.

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