Reply to "MTH Proto Couplers. What's the difference?"

gunrunnerjohnOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

It's simple, there are two types of couplers, the PS/1 couplers that have a resistance of around 5-7 ohms, and the PS/2 & PS/3 couplers that have a resistance of between 2-3 ohms. Also, if you look on the bottom of the couplers, the PS/2 and PS/3 couplers have a flat area with a patent number, the PS/1 couplers have no patent number.

There aren't three types of MTH couplers, only two. They are not interchangeable.

PS/1 couplers are also compatible with TMCC.

12/12/2011:08 AM

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