Jensen, Peter V.; Perham, Douglas; Albertus, F.; Radio--Transmitter-receivers; Arc Transmitter and Receiver; Men;
The First Arc Transmitter and Receiver built by Poulsen Wireless in 1910. Original photo in sepia tones, copies in colored and black and white. Shows Douglas Perham, F. Albertus and Peter V. Jensen.
The first radio telephone transmitting and receiving set which was installed on Commodore Huntington's yacht "Thelma" at Put-in-Bay, Ohio in 1907. The audion box on left with pan-cake turner above the large transmitting case was the first...
