What three services does a VORTAC provide?

• A. VOR azimuth, TACAN azimuth, TACAN distance (DME)
• B. VOR azimuth, TACAN azimuth, VORTAC altitude
• C. TACAN azimuth, TACAN distance, GPS time
• D. VOR distance, TACAN distance, GPS speed

Answer: (C)

VORTAC is a combined VOR and TACAN facility, so it delivers bearing information and distance. Civilians use the VOR to get the azimuth (bearing) to or from the station, while the TACAN portion provides another azimuth primarily for military users and, crucially, the DME distance. The DME distance is the range to the station, derived from the TACAN system. GPS time has nothing to do with what a VORTAC transmits. So the three services provided are VOR azimuth, TACAN azimuth, and DME distance.