US Patent 7170459 Split lead antenna system

An antenna assembly for mounting on a backstay of a sailboat. An insulative support apparatus includes a slotted center tube that can be forced over the backstay for mounting thereon. First and second outer tubes are attached on opposite sides of the center tube for holding first and second elongated radiators. Proximal ends of the radiators are electrically joined together and to a lead in-wire for connection to a receiver and/or transmitter. Distal ends of the radiators are secured at distal ends of the outer tubes by attachment to eyelets on the bottoms of plugs inserted into the distal ends of the outer tubes, which serve additionally to prevent water from entering the tubes. The outer tubes each include a water drainage channel to allow moisture accumulating to run out a bottom, proximal end of each tube.