Dudley, I know you're aware of this, but since this is a student
newsgroup I think it should be mentioned that it *is* possible to
obtain a reasonable position estimate using a single VOR.

No offense intended, but you might have missed a crucial point in
earlier posts in this thread. There was a contention that position could be
derived from a single VOR simply by knowing which radial the airplane was on
at a given moment.

Of course you're correct that a single VOR simply places you on a line.
So to determine position, we need additional information.

Which is exactly my original point...

...that a single VOR radial by itself does not, in fact, give position
but rather only 1/2 of the information needed to derive position.

Thanks, Sydney