MTH Protosound Boards:

 

 

Locosound board:

Locosound:  (Used in Older O gauge engines)

 

Protosound 1 board:

Protosound 1 (Top board):  (Used in Old O gauge engines)

Protosound 1 (Bottom board):  (Used in Old O gauge engines)

 

Protosound 2 boards:

Example 1:  5v Board (Used in O gauge) (2000-2003)

Example 2:  3v Board (Used in O gauge / One gauge / G scale engines) (2004 to current)

 

 

Protosound 3 boards:

Example 1:  PS3 board (O Gauge - Steam tender) 

 

Example 2:  PS3 board (HO Scale)  (Used in HO scale engines only)

__________________________________________________________________________________

 

 

Free Counters
Web Counter