An experimental 3 GHz microwave AM transmitter and receiver using a triode vacuum tube in Barkhausen-Kurz mode for both transmitting and receiving. In Barkhausen-Kurz mode the plate is biased near zero volta More
Parabolic antennas used in a 1931 experimental microwave relay link across the English Channel, one of the earliest experiments in microwave communication. The 10 foot (3 m) diameter dishes transmitted voice More
An experimental 700 MHz microwave transmitter on the roof of the Westinghouse office building in 1932, part of early research that resulted in microwave relay systems by the 1940s. The 16 inch waves radiated More
Identifier: bellvol25telephonemag00amerrich (find matches) Title: Bell telephone magazine Year: 1922 (1920s) Authors: American Telephone and Telegraph Company American Telephone and Telegraph Company. Inform More