I have both MTH and Lionel TMCC in my roster, and am wondering if this idea would work to run two TIUs simultaneously. Power the track through a Powerhouse, feed that into the DCS TIU’s “direct” channel, then out to the track. This assumes the TIU doesn’t do anything in the direct channel other than ad DCS signal. What do you think?
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You can run both DCS and Legacy/TMCC no sweat on the same tracks at the same time, we do it all the time. Connect the TMCC/Legacy directly to the outside rail, and wire your TIU as you normally would. Pickup the respective remotes and operate away. I was doing that today with half a dozen mixed engines on the layout.
Here’s my setup: I have 3 loops, 2 main and one smaller loop. All 3 powered by their own 180W brick. Loop 1&2 powerhouses feed into a MTH DCS TIU, variable channels. Loop 3 brick feeds into a 180W Powermaster directly to the track. I really like the Powermaster (we use them at the Chicago Lionel Railroad Club). A Legacy base is connected to all 3 ground feeds.
One of the DCS TIU’s variable channels has died. I checked the fuses, all good. The unit is about 11 years old (version 13) and has seen heavy use. The remaining 3 channels are working, and the 2 fixed channels have seen zero use over the years. It’s not looking good to replace this TIU as no one has any. (?) I can send it out for repair (recommendations?) but will need something to supply track power for the interim.
So I’m thinking I might add a 180W Powermaster each to tracks 1 & 2, running their output to the track by way of the fixed channels of the DCS TIU to pick up the DCS signal. In theory, that will give fixed and variable feed to the tracks.