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Old 23rd Apr 2019, 6:56 pm   #28
Graham G3ZVT
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Join Date: May 2010
Location: Greater Manchester, UK.
Posts: 18,711
Default Re: Another pulse to tone possibility

My guess is the dial connects to G, O & P,
Ground (com), Off- normal & Pulse, but it looks as if you have to improvise your own terminals using the holes in the PCB.
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