You are correct about the signal issue however if the cable coming into the house and to your box are RG19 it will not carry the bandwidth with the new signals. Check the cable to make sure it is RG6 as it is printed on the cable. If not RG6 replace it and ou should see a vast improvement. Houses that were wired when Comcast came into the market may have the old cable RG19. Why Comcast does not tell you this is still a mystery!
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