COAXIAL
Channel: PublicResourceOrg
Date: 2011-01-02

COAXIAL - National Archives and Records Administration 1940 - ARC Identifier 89091 / Local Identifier BTL-BTL-190 - Bell Telephone Laboratories, Inc.  On the value and principles of the coaxial cable. Explains how the coaxial carries many conversations at once and how calls over long distances are amplified by repeater stations. Shows details in the manufacture of coaxial cable. The first commercial stretch of cable is laid between Stevens Point, Wisc., and Minneapolis, Minn.  DVD copied by IASL Master Scanner Timothy Vollmer.