Post by LOU on Jul 27th, 2011 at 4:29pm
Folks, the problem is you're mixing apples and oranges.
The VOR is different than the GPS, in that the VOR is more accurate the closer you get to the station. At sixty miles from the VOR the width of one degree is one mile wide. If you make just a small error in placing the course in the OBS that will give you an error as well. GPS and inertial navigation do not have this problem. Each VOR in the RW needs to be calibrated every so often. The VOT at certain airports will give you a check on the status of the VOR receiver and the display.
If you're flying a VOR radial on a high altitude VOR using Jet airways, you could have legs that are pretty far apart and thus have slight errors in tracking the airway. You cannot compare the VOR and GPS when you are a long distance from the VOR.
Lou
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The VOR is different than the GPS, in that the VOR is more accurate the closer you get to the station. At sixty miles from the VOR the width of one degree is one mile wide. If you make just a small error in placing the course in the OBS that will give you an error as well. GPS and inertial navigation do not have this problem. Each VOR in the RW needs to be calibrated every so often. The VOT at certain airports will give you a check on the status of the VOR receiver and the display.
If you're flying a VOR radial on a high altitude VOR using Jet airways, you could have legs that are pretty far apart and thus have slight errors in tracking the airway. You cannot compare the VOR and GPS when you are a long distance from the VOR.
Lou
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