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Reply to "The RR Track Signal Control Board Project"

chris a posted:
 

My question Stan:  I am not sure whether I need 11 relays and 11 signals or 12 relays for the 11 blocks/11 signals.  My blocks are alpha labeled A through K... when the train leaves K it enters A ( continuous loop)....

I think I understand your question.  If you have 11 blocks and 11 signals in a continuous loop then you only need 11 relays.  They must all be of the 3PDT ilk.  That is, in the diagram each signal is wired to 2 poles of its "local" relay and 1 pole of the "next" block's relay.  In your example, for block K, the "next" block is block A.

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