VOR Applications

VORs can be classified as follow:

• A Conventional VOR (CVOR) is a first generation VOR transmitter which emits a spinning limacon shaped amplitude modulating variphase signal.
• A Doppler VOR (DVOR) is a second generation VOR transmitter with no moving parts, and sends a frequency modulating variphase signal through its many antennas which circle the beacon to use the doppler shift effect.
• A Terminal VOR (TVOR) is a low power beacon with shorter range, used as part of approach and departure procedures.
• A Broadcast VOR is usually a terminal VOR with a voice broadcast giving out the airfield weather (ATIS) superimposed on the carrier wave.
• A Test VOR (VOT) is a very low power beacon sited at some airfields. It puts out a constant phase difference of zero in all directions. This allows aircraft to test the accuracy of their equipment on the ground.

It is important to note, with the other possible answers, that the TVOR in question is not just for the inbound runway course, but is for all around the airfield, and is useful for both approach and departure.

Note: Do not confuse a TVOR with a Test VOR!