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I just read Allan's column in MRR sept. I am gald I did. What? blow to my plans. Now I have a cunundrum. I have laid all my track. I am using DCC specialties PSX, PSX-AR and Frog -ARs. I also planned

Thanks. -- Dave Portland, OR

Dave, That’s correct, but only if the programming track is isolated from the rest of the layout — which is the answer to the question you asked. Bill D N&W Steam Only

I can buy that John. Don't need to be a victim of Murphys Law. Thank you. -- Dave Portland, OR

Dave, The isolation track is to protect the main track from being powered by the program track, IF the loco being programmed wanders toward the main and shorts across the track boundary insulators.

Hi Bill. But I thought that was the purpose of the auto switch. It senses that you are programming so it de-energizes the main and only programs the program track. If I had 3 locos on the main it

Dave, As I understand it, you don’t need an isolated program track IF the only Loco on your layout is the one you want to program. Without isolation every Loco will be programmed. By isolating the

Hi - On this one-line diagram Jim shows the autoswitch wired to a programming track with an isolation track. I understand that the purpose of the isolation track is to keep you from accidentally

Don, Update I now have it working I removed the extra feeders from both side of the loop and now my AIU-01 is showing a LED as On when the train enter the block. All good now Thanks Tom -- Tom Grassi

Tom Grassi <trgrassijr@...> added the album BD20 Reverse Loop: Need help with wiring a Reverse Loop for block detection --- The following photos have been uploaded to the BD20 Reverse Loop (

Tom Grassi <trgrassijr@...> added folder */BD20 Reverse Loop*

Don Sorry the image disappeared I will place the image in the upload section and post the link The photo is here [email protected] | Album ( /g/w4dccqa/album?id=268738 ) Can you tell

Tom, the AR controller still needs to be wired from the main DCC bus and all track feeders inside the AR section(s). Each new BD20 needs to monitor all track current to one of the rails Inside the new

Hello All I have a reverse Loop and I setup two blocks in the Loop for signaling All trains can run in either direction thru the loop with now problem. Today on the two feeders I connected my NCE

A final thanks to everyone that has provided feedback. It is much appreciated and at this point I feel I have sufficient information to move forward. Nick

While there are many tracks, if you print out the track plan and look at it carefully, you'll see it comes down to a mainline oval, with a yard connected as a wye at F, with multiple tracks for each

I've uploaded pdf scans to the Files area. I couldn't find Nick's layout folder, so just dropped them in the Files folder. Perhaps someone could move them for me to the folder for Nick's layout. Don

The following files have been uploaded to the Files area of the [email protected] group. * /Longer Reversing Section.pdf ( /g/w4dccqa/files/Longer Reversing Section.pdf ) * /Minimum

Tim, I don't understand why you have made the reversing sections where you have, unless you're trying to equalize the loads on the power districts, and the Autoreverser is your fourth district. Most

Nick, it might help to do a schematic of the layout so you (and everyone else) can see the track connections without all the convolutions. As far as reversing sections go, it might be best to make the