Hi, OzEx
Yes, we are discussing the plain NDB approach, but what I was trying to say was: If an NDB/DME has a fix at the end of the o/b leg, then (a) that limits even further one's freedom to adjust for(anticipate) the drift in the turn, and (b) shouldn't the outbound time also be regarded as a kind of DME, in the sense that clearances are calculated on the basis that the time takes the a/c to a certain position along the o/b radial?
4Reds - I'm more concerned with separation from obstacles than from other aircraft.