Barry,
Thanks for the input. I tested the yard last night with Rev. L and the readings were all over the map. Clearly the filters are having an impact, at least in the yard. I did the test with both the H.2 and L for comparison. The layout and yard are stable with Rev H.2 and it's been this way for 8 years without a problem. My reason for getting the new TIU was two-fold, one was to have a back-up on hand if one were to fail. The second was to get an additional remote so I could have remotes in each operating area of the layout. I'd love to start removing filters to see how Rev L might work on its own, but then I would be messing with Rev H.2's stability. And the filters are soldered to the rails so I would have to cut them to take them out, then solder them back together if the filter was still needed. Sadly my layout is challenging for a DCS set-up, modular (25 mods total), molex plugs between modules, terminal strips at each end of every module to attach the molex plugs, and control panels with toggles. The layout was originally wired pre-command systems. When I put DCS in, I did re-wire as much as I could (isolated grounds for each main and the yard, setting up blocks where I could in the yard etc). That and the filters is what got me to a stable condition. The yard is funky because I have longish runs from the control panel toggles to the track blocks (where some of the blocks are spurs), just the opposite of what is recommended (I think I read you want to make the longest wire runs from the TIU to the terminal block, the shortest run from the terminal block to the track.
If and when Rev H.2 dies, I'll put Rev L into service and tackle the signal balancing then.
Thanks for the suggestions, though. It's just that I'd rather be running trains now than tackling what could become a challenging signal re-balancing act. Well, maybe not challenging, but doing it the first time 8 years ago sure was and those memories still linger...
Dave
