For Digitrax users the TCS (train control Systems) is a perfect decoder, of course I do have other makes of decoder including Digitrax, ESU, but no Lenz
as I prefer my decoders to have a wrapper on the outside. Lenz decoders run hot and have to have a method of dissipating heat that's why they don't use insulation. Their good decoders, I've installed a lot for clients who run the Lenz system.
If you running 00 like it seems you are then I prefer TCS decoders.
I like the TCS M1 decoder for your type of installation and in the garden smoke can be used to effect.
Like Digitrax decoders they have an insulated wrapped on the outside
They have a 2amp peak load for short periods and 1amp normal loading
They are cheaper
There is a goof proof warranty
and provided you use CV56 and CV57 as directed they give superb low speed running. This is called Dither by TCS
The Web site gives a host of installations in British loco's
they are readily available in the UK
they can be programmed on the main (ops mode) remember with your DT400 if you press the program button you can cycle through the programming modes
you have four of them
po is
ops mode programming or programming on the main use this to set up the running characteristics that you want on your loco's
but not the critical CV's like CV1 and CV29 these you should program on your programming track as they are unique to that loco.
have a look at:
TCS
TCS M1 decoder
Bromsgrove Models Stock TCS
Bromsgrove
In order for you to use Radio Control you have a UP91 and a DT400 R