DIRECTV 3 GHz Ground Block Single High Frequency With Weather Seal Boot Coax Cable F Type UL Listed Voltage Protect Connection Mount Outdoor Dish Digital Video Signal, Part # PVGB1HFWS
DIRECTV Approved 3 GHz High Frequency Ground Block!!!
This ground block is used to ground coax cables from a multi-switch, satellite dish or outdoor antenna. Used to ground and help protect fragile electronics such as satellite receivers and televisions from damaging lightning strikes and power surges.