chief, pivotal, early 14c., from Latin cardinalis principal, chief, essential, from cardo (genitive cardinis) that on which something turns or depends; pole of the sky, originally door hinge, of unknown origin. Related: Cardinally. The cardinal points (1540s) are north, south, east, west.
The voice was that of Reginald Fessenden (1866-1932), an inventor and engineer who had been working on producing voice radio since Marconi's first wireless broadcast across the Atlantic. After his Christmas experiment, Fessenden continued working to make voice radio practical.heir first nationwide broadcast was the 1927 Rose Bowl football game from Pasadena. The burgeoning industry made the airwaves so jammed and chaotic that the Federal Radio Commission was established in 1927 to assign frequencies to broadcasters.
As Cottam, now assisted by Harold Sydney Bride, the surviving radio operator from Titanic, began to transmit the names of the survivors, David Sarnoff, a 21 year-old radio operator from Philadelphia was one of the people with a receiver powerful enough to pick up the signals broadcast by Carpathia.Sarnoff would eventually go on to create the first ever national radio network-NBC!). By April 18th, 1912, three days after the sinking, Carpathia was approaching the familiar landmarks of the Statue of Liberty, and the skyscrapers of New York.