Television and radio outposts may become the eyes and ears of our coast defense, automatically spotting the approach of enemy vessels, submarines and airplanes far out at sea. U. A. Sanabria, a Chicago radio engineer, in collaboration with Dr. Lee De Forest, has proposed that a series of automatic transmitters, each consisting of a television camera, several listening horns, and a submarine sound detector be anchored to buoys 300 miles off the coast. These instruments, equaling the efficiency of human eyes and surpassing human ears, would report to shore stations by cable, relay radio or direct radio, the sight and sound of any activities within their range. Wireless “feelers” could be sent from shore stations, and if they failed to establish the identity of any ship, scout planes could be dispatched to the scene. The television camera, with high-powered lens, would be mounted on a moving platform inside a transparent shell atop the housing that contains all the mechanism. Listening horns connected with an amplifier would be mounted above and below the camera, Sufficient power to operate the frequency modulation transmitter and to oscillate the camera would be generated by a five-horsepower Diesel engine. To minimize the effects of waves, the housing would be mounted high above the surface on long posts having their foundation in a huge buoyant tank anchored to the ocean bottom by chains that would hold it several yards below the surface. Within the tank would be stored 500 gallons of fuel oil which would be sufficient to run the Diesel engine unattended for three months. It is estimated that 300 such units spaced 20 miles apart could patrol all of our coastline. Enemy action might destroy many of the units, but the cost of replacing them would be small compared with the loss of a single naval vessel. Also ships would be relieved of considerable patrol duty. At shore stations, operators would watch television screens and oscillographs. A separate screen for each camera would show a picture of any ship or plane within its scope, and the oscillograph patterns would indicate unusual sounds, which could be heard by plugging-in headphones.