Communications

Newspaper announcing transcontinental telephone line. Reenactment of a…

Cartoon of five telephone conversations through improved carrier system…

Cartoon of telephone wire in copper tube to create coaxial cables.…

CU of reenactment of Dr. George Southworth examining a segment of a…

Image of different switchboards to illustrate modern automatic…

Scene of researchers discussing telecommunication technology - man…

Different scenes of experiments of the semiconductors. CU on germanium…

CU of transistor and plate with semiconductors. Man explaining…

Man at control panels, scientists, experiments, lab coats scientists…

Footage from a program explaining different jobs in the radio and…

Footage from a program explaining different jobs in the radio and…

Footage from a program explaining different jobs in the radio and…