Broken/CVP Products

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Company Summary

CVP Products has been manufacturing train control products since the mid-1970s. Products included the build-it-yourself CTC-16, CTC16e and later Railcommand command control systems. Today, CVP Products offers the EasyDCC system and accessory decoders and has one of the most robust radio throttles on the market.

Company Links

Provided links to CVP Products to make your life easier in finding information.


Contact Information

Phone 972.238.9966
Fax 972.516.9527
Address CVP Products
P.O. Box 835772
Richardson, TX 75083-5772

Products Offered

CVP Products offers stationary decoders, power supplies, throttles, Boosters and wireless control for other systems.

Command Station

There is the main command station, the CS2-B. The latest firmware is 629 released in 2007. It uses a CR2016 coin battery for battery backup and can handle 255 locomotives in memory. It provides a programming track output, RS232 port (with special cable, not included), Booster output and throttle input ports. Cabling between these items is from 6P6C modular cable and one can easily make their own with off the shelf crimping tools.

The CS-2B with 629 firmware allows for NMRA F0-F12, improved throttle response times, optional software deactivation of many RS232 functions which further improves throttle response times and was given an NMRA compliance warrant for meeting the NMRA DCC standards.

The EasyDCC system is fully compatible with DecoderPro software through the use of the included RS232 port. However, a special cable from 6P6C to 9-pin RS232 is required and can be easily made with the proper tools.


For boosters, CVP Products offers:

  • ZoneMaster single - SZB7
  • ZoneMaster single with Autoreverse --SZB7-AR
  • ZoneMaster Dual --DZB7

While not technically a booster, they do also include a supplemental device called ZoneShare. The ZoneShare takes one booster track output and separates it into 4 managed "boosters" so that if you have a short, it doesn't shut down the entire railroad, just the zone affected.

  • ZoneShare ZS4E -- Provides four separate track outputs for districts (zones) from a single booster. This device can be used with any make of booster such as NCE, Lenz, Digitrax and of course, EasyDCC.


There is a basic throttle and an advanced throttle for the EasyDCC system. Under 629, you can have up to 32 throttles in any configuration with the EasyDCC system (limit of 16 wireless.) This does not include the 2 included throttles on the command station CS2-B. Prior software allows up to 99 throttles with a slightly slower throttle response time. The 629 software requires upgrade software in all throttles with the change of a CPU chip inside.

Since the command station comes with two built-in throttles, you do not need to add external throttles unless your need requires it. Should you choose to add additional throttles, you would purchase a Throttle Bus Extendeder card (EXDA) which creates a coaxial based throttle bus and creates the data stream to return to the command station throttle bus port. The recommended coax cable is RG59.

  • EXDA - Throttle Bus Extender card (creates a coax throttle bus)
  • XR1300-4 - Corded throttle with 4-digit addressing
  • RF1300-4 - Wireless throttle with 4-digit addressing
  • T9000E - Wireless with LCD display and 4-digit addressing
  • RX904G1 - Wireless receiver for Throttle Group 1 (freq 1-8)
  • RX904G2 - Wireless receiver for Throttle Group 2 (freq 9-16)

EasyDCC's wireless system is one of the leaders in the industry. They created one for the first RF control systems for their CTC-16 system back in the early 1980s which was published in MR.

Please see the CVP Products page for details.