To fasten the mounting bracket to a masonary wall, drill two 9/32-inch holes one inch deep, using the bracket as a template. Attach the bracket to the cable connector with the large brass nut and tighten it with a wrench. Then hammer a rawlplug into each hole in the wall and attach the bracket with self-tapping screws.
To fasten the mounting plate to a bulkhead or cabinet, drill three 9/32-inch holes using the plate as a template. Also drill a one-inch hole at the center to allow clearance for the cable connector and brass nut. Remove burrs from the holes with a file. Attach the mounting plate to the cable connector with the large brass nut and tighten it. Then attach the plate to the cabinet with 1/4-20 threaded hardware.
