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Signalling Articles Coming Soon

We have a couple of articles under development on the topic of railway signalling.

With recent work involved with one of our customers using our Signal Animator in ABS mode to signal his layout, the importance of creating a signal plan becomes apparent. A signal plan puts down on paper where signals are located and summarises what indications are needded for each signal. This permits confirming the SGA can support the needed indications, and identifies how the SGA interfaces with other components. Out of this, a wiring diagram can be developed to assist in making the necessary connections, and provides a list of system responses to permit testing that a signal will display the correct indication for each situation. A signal plan also makes it easier to see if your numbering scheme for signals makes sense.

Before we complete and publish the article on creating a signal plan, we have been approached by a few individuals asking for an article covering an overview of signalling: from the basics of what its purpose is, a brief history of how it has developed, and, most importantly, where should signals be placed. The article will answer questions such as:

  • Why would a signal be placed in one location and not in another?
  • Why do some signals have a single head, two heads, or three heads? Where are each used?
  • Why are some two-head signals vertically lined up and some skewed? Where are each used?
  • What indications can be expected from a signal at a particular location?

The article on the basics will be available in early December, and the article on creating a Signal Plan should be available by late December.


Evolution of a Signalling System

Our article on the evolution of a Signalling System has been updated to outline the latest developments.

This article describes a currently working system that is not practical to market in its current design. The article describes its features and outlines the shortfalls that make is unmarketable. Then it outlines current plans to redevelop the system so that it can be sold as a product along with other items we offer.

If you are interested in signalling for your model railroad, or just curious, we encourage you to take a look at this article. There is an email link at the bottom for any questions or feedback.




We have added accessory items to our products page. This will include items for use with our products such as IC sockets, header plugs, spacers, and jumpers.


Traverser Power Supplies:

We now have a power supply suitable for the Traverser. It is a "wall wart" type power supply that provides 12 VAC at up to 750 mA, from a 120 VAC outlet (Canada and USA). The price is $8.99 on its own, but will only add $7 to a Traverser/QOD combo. See The Traverser product page for details.


Grade Crossing Bell Sound:

Our Grade Crossing Controller (GCC) implements the logic needed to operate a grade crossing, including the flashing lights. It is still necessary to have actual signal lights it will control, and if one wants an operating gate, that too must be built separately. Then there is the question of sound: a bell that sounds when the crossing is active is the ultimate bell and whistle for the layout.

There are sound modules available on the market that are reasonably priced. The HQ Series Sound Effects Module by ITT Products is one device that we have tested with the GCC. All that is needed to interface the two together is a resistor and a transistor. Take a look at our Documentation Page to see the new Application Note.




Paris Junction Model Railway Show
Paris Fairground
139 Silver Street, Paris, Ontario
Sunday January 21
10 am to 3 pm