Hi Mike,
The main loop is one block that is powered by one channel of the TIU. The error in wiring is that there was no connection of any of the three rails on one end of the bridge to the rest of the loop. This error broke the loop into two long stubs. Track signal values were fine everywhere except on the section of track on one side of the bridge. My belief is that the reflection from the two stubs was much worse on the end portion of one of the stubs because of the length of that stub. Note that the feed from the TUI was not exactly in the middle of the broken loop. Since I didn't need this loop to broken into two stubs, the simple solution was to connect the break in the loop connecting both ends of the bridge to the loop thus eliminating the stubs all together. I do have some shorter subs off the main look in a yard area, but these do not seem to be causing enough reflections to create poor track signal levels.
Comments/corrections are welcome
Walter
