TDP & Associates, Inc.

Electronics for the Model Railroader


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Company Profile

TDP & Associates, Inc. was created in 2002 by two active modelers with some far-fetched but creative ideas.  With over 60 years of model railroading experience between us, we offer simplified advanced electronics for your model railroad.  The TrainSpeed family of products was the company’s first successful offering to the model railroad industry.

We currently offer speedometers for your trains (TrainSpeed & TrainSpeed4), a grade crossing flasher controller (FlashMaster), a grade crossing gate/mechanical positioning device (ServoMaster), and an automatic block signal controller (ABSMaster™).

In real life, Ed (HO & Reading RR) is a quality engineer while Paul (N & Pennsylvania RR) is a test engineer.  Both of us have been modeling since we were young and we are avid railfans as well.


Contact Information

Unfortunately, we have 'day' jobs so you will rarely get a 'real' person on the phone.  E-mail is your best bet but if you call, leave a message for us with the best time to call back.  We are getting hundreds of spam emails a day and I occasionally miss a 'real' message, so if we don't answer, please write again.

Telephone: 610-358-0460
Postal address
4 Jones Drive; Boothwyn, Pa. 19061
Electronic mail
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Last modified: 04/03/07