Dcs signal

I never had a signal problem using Gargrave switches with a H1 TIU before replacing them with Ross. The latest L TIU puts out a stronger signal. It's probably something with your layout or wiring that's causing the problem.

It's not weak DCS signal strength that's your problem. "Getting through" a switch track has nothing to do with DCS signal strength.

It's more than likely a wiring or track connection issue within the layout.

I use Gargraves switches and have no signal problems.  Have Rev G & Rev H TIU's

ironlake, what gargraves switches are you using?  I know that on my standard gauge Gargraves switches, center rail power is not continuous through the switch.  Each of the three "legs" of the switch (straight in, straight out, curved out) have to be powered independently.  Don't know if O gauge are similar or if you have continuous power through your switches, but you might check, or try independent power drops to each leg.

I have about 40 GarGraves switches some of them 25 years old and some one year old and I have to wire the straight in, straight out and the curved out together, I am refering to the center rail O gauge switches and I do not have any signal loss

why do my tmcc engines go through fine then.

Tmcc uses an entirely different method of "talking" to the locomotive. DCS uses the center rail and the locos center pickups, TMCC uses the outer rails as well as the ground wiring within the walls of your train room and an antenna on the locomotive.

Proto-2 engines carry on with the last command given. If the engine is running at say. "10 per" and loses the dcs signal, the engine will carry on at 10 per until communication is established again. I'm not sure whether you engines are stalling on GarGraves switches  or you can get the dcs signal from one end of the switch to the other end.... run a small jumper wire if that's the case.

If a PS2/PS3 engine stops or stalls at any time, it is not because it loses the DCS signal. It's because of an electrical problem.