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Old 7-Oct-2015, 11:08 AM   #3
Retired A/V Tech
Join Date: Aug 2012
Location: S.E. VA
Posts: 2,708
Filters can be less effective if the coax shield isn't grounded; interference can get directly into the TV cabinet.
If you can not measure it, you can not improve it.
Lord Kelvin, 1883
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