"COMBINED VOR (VARIABLE OMNI RANGE) SYSTEM AND TACAN (TACTICAL AIR COMMUNICATION AND NAVIGATION) SYSTEM WHERE ANTENNAS ARE COAXIALLY LOCATED; VOR PROVIDES BEARING (AZIMUTH) INFORMATION TO AIRCRAFT FROM GROUND; TACAN PROVIDES BEARING AND DISTANCE INFORMATION FROM GROUND;1-PHASE,3-WIRE 120 VAC,OR 3-PHASE,4-WIRE 208 VAC, 47 TO 63 HZ; C/O INPUT-OUTPUT TERMINAL 2,PRINTER 1,REMOTE DIGITAL DATA MODEM 1,CONTROL-INDICATOR 1,TACAN ANTENNA 2,VOR ANTENNA RADOME,BATTERY ASSEMBLY 1,TRANSMITTER GROUP1"