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Joined: Feb 2014
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OP
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Joined: Feb 2014
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I have 2 opx cards in a IPKII and all opx ports have a hum.
All the field cable pairs have been checked . I have changed cards and still the same hum exists.
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Joined: Sep 2004
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Have you put a butt set on it to check?
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Joined: Feb 2014
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OP
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Joined: Feb 2014
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Yes,it has a slight hum without resistance,as you increase resistance hum increases.
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Joined: Sep 2004
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