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Item: ACCUSPEED Locomotive Remote Control

Cattron-Theimeg continues to be the recognized technology leader in the design and implementation of LRC (Locomotive Remote Control) systems with more than 57 years of radio frequency experience and nearly 10,000 locomotive and rail related installations worldwide. The ACCUSPEED™ system uses the latest technology to provide the features necessary for safe, efficient and accurate operation of remote controlled locomotives.

System Features:
• Synchronized Time Sharing™ (STS) - U.S. Patent Pending
• The ability to add multiple radio repeaters that extend the operating range of the LRC systems.
• Pathfinder™ automatic selection between the repeater and the direct transmission path that is totally transparent to the operator.
• Robust 2-way data radio communication for the time critical operation to and from multiple locomotives operating in the rail yard.
• Fast response time of commands sent from a Radio Controlled Locomotive (RCL) operator to the locomotive.
• Display of critical return data and warnings from the locomotive to the RCL operator. Illuminating indicators on the OCU verify RCL operator commands (speed select, direction etc.,) have occurred at the locomotive.
• Commands sent by the primary Operator Control Unit (OCU) are monitored by the secondary OCU maximizing safe and efficient team operation.
• Text message display on the OCU completes the information link by providing speed, air pressure and other selected data.
• Immediate warning that data communication is lost with the locomotive provides critical seconds of warning to an OCU operator to prepare for an eventual stopping.
• Safe dismissal of secondary operator when conditions and rules allow for single operator control.

Digital Talkback™ with “InfoLink” - True two-way digital communication between the Operator Control Unit (OCU) and the Locomotive Control Unit (LCU) through text display and function LED’s on the OCU.

Electronic Position Detection (EPD) - Cutting edge technology using GPS and/or tag-reader systems for track position, providing electronic sense, pull-back protection and function zones, such as automatic horn, bell or crossing signals.

Slow Speed Control - Allows locomotive to run at +/- 0.1 MPH over the entire load out.

WABTEC/Cattron-Theimeg™ Digital Event Recorder- over 200 channels, with 96 hours of RCL data collection and storage, including all standard WABTEC locomotive functions.

Available RF Repeater - Extends operating range.

Interchangability - One system can be MU’d with other locomotives.

Compact LCU - All equipment and enclosures designed for quick removal and replacement.

Radio Channel Selectability, externally, on board.



Rail / Locomotive


Laird Controls North America, Inc.


(PDF, 3518KB)

Remote Controls for Rail Applications
(PDF, 4175KB)

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