Directv hd satelite system runs mhz ratings from 5 to 2150 and cox cable runs 5 to 900mhz and return passive at 5-42. so the two systems are conflicting with each other. standard dtv runs 900 up mhz so that is fine. but the hd system runs different. and if its a dtv swm system its another story as well. short story -run another outlet.
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