MSS Home
MSS Standard
MSS User Guide
MSS Home
MSS Resources
copyright 2005-2017
MSS Compatible Products
The items listed here are known to be compatible
with the Modular Signal System
Modular Signal System - MSS
Railroad Signal Collections Photos of prototype signal installations.
Railroad Signal Site photos and information about prototype signals.
The Rails Santa Fe prototype signal photos and information.
North American Signaling Carsten Lunsten's excellent graphical descriptions of prototype signal systems.
General Signal Information
A sampling of what's available on the Internet
Wikipedia - North American Railroad Signals lots of additional links to explore from here.
Railroad Signals of the US A plethora of assorted US signal information.
NORAC Signal Aspects Northeast US signal information.
Control Train Components An explanation of CTC signal systems.
Manufacturer ................Occupancy Bus..Current Detection..Optical Detection..Signal Drivers..Multifunction..12V Supply

Circuitron
(SD-1, SD-3, PS-2)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X . . . . . . . . . . . . . X
___________________________________________________________________________________________________________________________
Heathcote Electronics
(IRDOT-1D and related line)
. .. . . . . . . . . . . . . . . . . . . . X . . . . . . . . . . . . . . . . . . . . . . . . . ___________________________________________________________________________________________________________________________
Iowa Scaled Engineering
(MSS line, detectors)
. . . . . . . . . . . . . . . X . . . . . . . . .X. . . . . . . . . . . . . . . . X . . . . . .X. .
___________________________________________________________________________________________________________________________
L-Com
(crossover network cables)
. . . . X . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ___________________________________________________________________________________________________________________________
Model Railroad Control Systems
. . . . . . . . . . . . .. . . . . . . . . . . . . X . . . . . . .. . . . . . . . . . . . . . . . . . .X . . . . . . . .
___________________________________________________________________________________________________________________________
Model Railroad Signal Systems
("Free-mo" line)
. . . . . . . . . . . . . . . . . .X . . . . . . . . .X. . . . . . . . . . . . . . . . X . . . . . . . .
___________________________________________________________________________________________________________________________
North Coast Engineering
(BD20)
. . . . . . . . . . . . . . . . . . . . . . X . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ___________________________________________________________________________________________________________________________
Optek
(OPB704W, OPB705W at Digi-Key)
. . . . . . . . . . . . . . . . . . . . .X . . . . . . . . . . . . . . . . . . . . . . . . .
___________________________________________________________________________________________________________________________
Scale Nature Company
(OBUB)
. . . . . . . . . . . . . .X . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X
___________________________________________________________________________________________________________________________
Scale Signal Systems
. . . . . . . . . . . . . . . . . .X . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. X . . . . . . . .
___________________________________________________________________________________________________________________________
SLIQ Electronics
DCCOD)
. . . . . . . . . . . . . . . . . . . . . . X . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ___________________________________________________________________________________________________________________________
Tam Valley Depot
(semaphore control)
. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X . . . . . . . . . . . . . . . .
___________________________________________________________________________________________________________________________
Team Digital
(DBD22)
. . . . . . . . . . . . . . . . . . . . . . X . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
___________________________________________________________________________________________________________________________
TracTronics
(AutoBlock, no longer available)
. . . .. . . . . . . . . . . . . . . . . . . . . . . . .X . . . . . . . . . . . . . . . ..