Originally Posted by welliewanger
The COP is not half way between the two because one transmitter may be more powerful than the other, or at a higher elevation or have more / less interference. The COP is where the strength of the two is equal at a defined altitude.
And how would you then define change-over point from Jeppesen En-Route Chart for a VOR to VOR airway if there is no change-over point/distance specified?