About Us


The original QuadLN was born of a collaboration between Duncan McRee of Tam Valley Depot and Robin Becker of N3IX Engineering to create a new Tam Valley Depot LocoNet stationary decoder with the features of the existing QuadPic 4 servo decoder. Robin made the new QuadLN product field-upgradable and began steadily adding features. After Duncan updated the hardware to support further enhancements and Robin upgraded the software to support up to 8 servos, the original QuadLN became the QuadLN_S. After that the product family vision began to take shape. First came the Signal add-on board and later the Detector add-on board, allowing the QuadLN_S to fully support an OS / Control Point. To accompany each new board, Robin added new features maximizing the utility and value of the system. The innovation goes on to this day – the latest upgrade enables one QuadLN_S to support up to 16 servos.


Duncan was recently diagnosed with a serious medical condition and has retired, bringing an end to manufacture and sales of the QuadLN_S by Tam Valley Depot. Duncan has passed the QuadLN_S product family over to Robin, and N3IX Engineering now handles manufacture and sales of the QuadLN_S family.


Since the beginning Robin has provided the customer support for the QuadLN products. He is committed to the QuadLN_S system and works tirelessly to help users achieve their model railroad control goals. Robin uses the entire family of products on his own layout.


N3IX Engineering
2878 Copley Ave
San Diego CA 92116