VOR vs TACAN

[groundpointsix]

Can someone explain to me the differences between a VOR and a TACAN? I am under the impression that what the pilot sees on his HSI or OBS is the same for both types, but that the TACAN operates using a different principle. Thanks

 

[pilotyip]

TACAN was designed in the 50's for aircraft caariers, the VOR will not work on a moving platform. As I remember from Navy Ground School back in 1966, the VOR has one stationary signal generator with one rotating signal generator and the TACAN has two rotating signal genrators based upon a 30 degree spacing overlaps, and one of the things you had to look for was a 30 degree bearing error in your TACAN when you did a TACAN bearing check on the ground. The DME portion is the same. VOR in VHF, TACAN is UHF.

 

[siucavflight]

The indication are the same. A Tacan has DME capability.

 

[JimNtexas]

Because of the smaller wavelength and higher rotational speed of the azmuth beam, TACAN is more accurate in azmuth than a VOR. The basic principle of operration is the same for both.