VORTAC is a navigational aid for aircraft pilots consisting of a
VHF omnidirectional range
VHF omnidirectional range (VOR) beacon and a tactical air
navigation system (TACAN) beacon. Both types of beacons provide pilots
azimuth information, but the VOR system is generally used by civil
aircraft and the
TACAN system by military aircraft. However, the TACAN
distance measuring equipment is also used for civil purposes because
civil DME equipment is built to match the military DME specifications.
Most VOR installations in the
United States are VORTACs. The system
was designed and developed by Cardion Corp. (RDT&E contract was
awarded 28 December 1981).
^ Department of Defense appropriations for 1983, pt. 2, p. 460.
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