Alfaspid ROT1Prog controller grounding

Discussion in 'Antennas, Feedlines, Towers & Rotors' started by K4HYJ, Jan 6, 2019.

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  1. K4HYJ

    K4HYJ Premium Subscriber QRZ Page

    Gentlemen...
    I have finally gotten my tower up and antennas installed. I'm finishing the shack wiring and while connecting the ROT1Prog controller to the Big RAK rotator, I noticed in the manual the recomendation to ground it to your station ground. There is a tapped hole on the back panel of the controller for a bolt, but I cannot find the right size to fit it. It may be sloppy threads, but I don't want to force it. Anyone know specifically what the proper size/pitch is for the factory hole?

    I've tried metric, standard, and course/fine etc. - no joy.
     

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