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  1. Frog321

    50 ohm antenna

    i am guessing the 1/2 wave dipole should be around 1.275meters. would the type of coax used determine the impedance of the antenna? ie.... rg59....75 ohm ....rg223....50 ohm???
  2. Frog321

    Three phase transformers

    there are several types of transformers; wet - oil filled
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