Find the portion of cable requiring repair. Cut off this section with the wire cutters. Make sure the cut is as straight as possible.
Lay the end of the coax into the proper receptacle on the coax stripper (RG-6/RG-6 quad). Squeeze the handles and rotate the stripper to cut the outer insulation.
Pull off the insulation, revealing the braided shield. Fold this back evenly around the outer jacket.
Push the new connector onto the end of the coax. Ensure the new connector is as far down as it will go, so the white plastic dialectric is flush with the bottom of the inner collar.
Lay the collar of the new connector into the coax crimp tool. Squeeze the ratcheting handles until the clicking stops, indicating a full crimp.
Screw in the 3GHz adapter into the new connector. Screw on a new piece of RG-6 quad shield coaxial cable onto the other end of the adapter. Screw the other end to the satellite decoder or diplexer, depending on the installation.