T.D. Dutton and J.J. Boone, radio broadcasters of the American Telephone and Telegraph Co., testing the installation for broadcasting the inaugural ceremonies

Testing installation for broadcasting the Inauguration, 2/27/29

Engineers prepare for black broadcast. Washington, D.C., Oct. 1. A real fireside chat will be the address of Justice Hugo L. Black to the nation tonight over a coast-to-coast hookup from the home of Claude E. Hamilton in the capital. Radio engineers Jerry Hurlbut and Stanford H. Rose are shown testi

Pre testing at House of Rep., 1/7/26

Opening of new trans continental phone line, 1/17/27. *The conclusion seems to be that John W. O’Leary, president of the United States Chamber of Commerce at Washington, DC, is on the phone. To the left is Samuel M. Greer, Vice-President of the Chesapeake and Potomac Telephone Company.

Newest transcontinental telephone line is opened. The newest transcontinental telephone

U.S. Chief Signal Officer (G.S.Gibbs?) inspects new radio equipment for talking to Aviators in flight. The new aircraft-radio equipment designed by both the Signal Corps of the War Department permits of both radiotelephone and radiotelegraph communication, sending, receiving, at the same time. The a

Colored radio recorder is latest in radio receivers. E.B. Judson of the Bureau of Standards and his two colored radio recorder, automatically recording signals in two colors, red and black. This automatic receiver is capable of receiving signals from American or European stations

In recognition of his having conducted the most successful radio show in the U.S. Alfred Stern, director of Washington's first radio show, was presented with this elaborate loop antenna by Dr. J. Harris Rogers, famous inventor. It is estimated that 50,000 persons attended this exhibition