The navy opens the largest radio transmitter in the world. Chairman David Signoff of RCA, an old Marconi operator, taps out the first message over the million watt transmitter, which can contact a ship, plane or installation anywhere on the globe. Establish shot - Looks like a building. MLS - People have gathered in a room. MCUS - General David Signoff of RCA shaking hands with Admiral Carney, Chief of Operations. MCUS - Men sitting in chairs and standing applauding. CUS - General Signoff sending the first message. MLS - Naval officer standing in front of a map. CUS - Naval man sitting at a tell-a-type sending messages. MLS - Out side shot of electric wires attached to medal towers.