Do you have a question about the SeaWatch 3019 and is the answer not in the manual?
Mount antenna on a marine extension mast, standard 1in-14 thread marine antenna mount or sailboat mounting bracket.
Mount the power supply vertically 3-1/4in apart leaving screwheads approximately 1/8in from wall.
Route RG-59 cable from antenna to power supply, cut cable, and route remaining piece to TV.
Strip cable jacket, push back and twist braid around dielectric, and screw F-connector onto cable jacket.
Connect antenna cable to power adapter, output to TV, AC/DC adapter to power supply, and plug into socket.