<<<<<<<>and all trains hauled by an AWARE loco use this system.>>>>>>> The suspense is killing me, what on earth is an "aware" loco? Krel, so if I read your post correctly NR are using smart freds? BTW, is digitair still in existence? Only the ancient freds in the US were digitair. "Prime" seem to have the market sewn up. Mark. Visit my train pic website at: http://home.earthlink.net/~markbau/