We are a large club with a Digitrax Chief command station and two boosters. Each booster serves one of two parallel lines, one blue and one black. The two lines work well independently of each other except I got a short when I hooked up a RR crossing signal which is shared by both black and blue lines. In this situation there must be some crosstalk, I suppose. Do the boosters need to be in phase or something like that to avoid the short? Thanks.
They do for locomotives to pass between them. I would suspect the same for your signal. The easiest way to tell is run a locomotive from one booster to the next with it straddling both boosters. If it keeps going then they are in phase. It you get a short, they are out of phase. I had this problem with I first hooked mine up. Found out that one of my boosters was backwards on the front panel, right out of the box.
I went to the club this evening and looked at the two boosters. They were wired identically. I reversed the output wires to the rails on one of the boosters and the problem went away. Now my crossing signals work.
Same problem here. Was one a 100 and the other a 150 ?