07-01-2014, 02:29 PM
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Senior Club Cobra Member
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Join Date: Sep 2000
Location: Holderness, NH, US of A,
NH
Cobra Make, Engine: CSX 4772 old iron FE
Posts: 5,499
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Not Ranked
Kirkham should be able to tell you what they use. Common impedance is 0-90 and 240-33 ohms. I'd bet it's one of them.
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