Zigmont,
I just finished viewing Mike's video in it's entirety. Mike makes a valid point of saying that the Legacy signal needs to be in both outside rails in order for it to be strongest, with matching sink points, for best reception by a Legacy/TMCC engine. However, he makes no mention of what happens if that is not the case.
Common sense tells me that when only one of the two rails is carrying the Legacy signal, the signal strength is halved. Based on my personal experiences with TMCC and Legacy, going back 12+ years, I'd have to say that half of the maximum signal works just fine.
Perhaps it's because Lionel is the only major manufacturer of track where the two outside rails are tied together that Lionel is stating that the Legacy command base must be connected to both outside rails in order to obtain the best Legacy performance. Obviously, Lionel would prefer that we all use FasTrack rather than any other track system, which makes Mike's statements regarding using both outside rails somewhat self-serving.
Based on all of the above, my take on the situation is as follows
- Connect the command base to one outside rail
- If you experience problems at a specific place on the tracks that is due to parallel tracks canceling out the Legacy signal, install a ground place
- If you experience problems at a specific place on the tracks that is not due to parallel tracks canceling out the Legacy signal, jumper the two outside rails at that point
- If you experience problems in many places on the tracks that is not due to parallel tracks canceling out the Legacy signal, connect the command base to both outside rails for the layout.
Working on the theory that "if it ain't broke don't fix it", I'm leaving my layout just the way it is. I believe, based on personal experience, that while having the signal in both rails may, indeed, be strongest, one rail is plenty for my railroad.