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For the filter and attenuator to be fully effective, you might need to ground the coax shield with a grounding block connected to the house electrical system ground. Otherwise, the interference might get directly into the TV cabinet. It is not required by code, but might make a difference in performance.
Please let us know the results of your tests on this same thread.
Best regards,
rabbit
Last edited by rabbit73; 25-Aug-2016 at 12:54 AM.
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