Controls and Electrical
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Control systems and operation

Hobby terminology in plain English
Published: February 3, 2010
Dispatcher control (cab control)
To operate more than one train using direct current (DC) train control, a model railroad can be divided into a series of isolated electrical blocks. A dispatcher then assigns one or more blocks to an operator's cab, allowing him to run his train in these areas.

Memory throttle
A memory throttle allows an operator to follow a train around the layout. The operator runs the train with a handheld cab that can be plugged into jacks. When the operator unplugs the cab to go to another station or switching location, the train will maintain a constant speed until the cab is reconnected at the next plug-in point. This type of cab is good for following a train around small and large layouts alike.
Fig. 7. DCC controller. Wireless DCC throttles offer freedom of mobility for operating a layout.
Fig. 7. DCC controller. Wireless DCC throttles offer freedom of mobility for operating a layout.
DCC
Digital Command Control (DCC) is another type of multiple-train control. Unlike cab control, DCC doesn't require the use of isolated electrical blocks, making wiring simpler. Instead, each locomotive on a DCC layout is equipped with a decoder, which allows it to receive commands anywhere on the railroad. This way, two or more locomotives can run independently on the same track. Many DCC systems also offer wireless throttles. See fig. 7.
Fig. 8. Card order system. Bill of lading cards are stored in racks attached to the side of a layout.
Fig. 8. Card order system. Bill of lading cards are stored in racks attached to the side of a layout.
Card order system
All freight operations have either a bill of lading or a computerized switch list that indicates the cargo and destination of each car. On a layout with a card order system, the train operator drops or picks up cars along his route according to each car's card. See fig. 8.

Just a start
Understanding these terms will help you start finding the information and materials you need to build the layout of your dreams.
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3 stars
PATRICK LEDUC said:
Good info. I will probably use this system. I will start small and and to my layout as time and money permit.
JACOB OLIVER from MISSOURI said:
U.less you use a duel-moxe decoder, you can't.
DAVE RIECO from PENNSYLVANIA said:
DCC can and will get very exspencive. Just do it in small steps and it will be very enjoyable.
Dave
4 stars
KEVIN CHAMBERLAIN from ILLINOIS said:
I have been a modeler for over 40 years. DCC AND SOUND are the greatest ever! track laying, power routing and wiring are so easy now.
4 stars
PAUL SMITH from MAINE said:
I run just DC right now, but one of my friends is running an N scale layout with several blocks with DC controls. He is wondering if he can run a DCC locomotive on his DC layout but operate it independently of the DC locomotoves (in a different block). Can he do that?

Also, I'm looking for a way to run two trains on one DC loop by setting up an automatic block so the faster train will stop automatically before rear-ending the slower train. I have a 125 foot single main line. Is there a relay that can be wired into the loop that would power or disconnect power to a block occupied by another train? I think I saw a video on TV where something was set up like that for Lionel or American Flyer.

Thanks.
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