AT&T Long Lines: The Wireless Network Before the Internet

This video describes the history of the AT&T Long Lines system from a present-day perspective, mainly focusing on the TD-2 microwave radio relay network. My follow-up Long Lines videos: Waveguides and Antennas:    • AT&T Long Lines: The Waveguides and Antennas   Power Plants, Batteries, and Generators:    • AT&T Long Lines: The Power Plants, Batteri...   All content used in this video is in the public domain or qualifies as fair use for educational purposes. Sources and further reading: https://en.wikipedia.org/wiki/TD-2 https://www.wired.com/2015/03/spencer...   / 10101113374939540      • Long Lines Microwave Video Sources   https://long-lines.net/index.html https://long-lines.com/ https://www.telecomarchive.com/ https://en.wikipedia.org/wiki/History... https://en.wikipedia.org/wiki/Vacuum_... Additional royalty-free stock images obtained from: https://pixabay.com/collections/long-... Video Chapters: 0:00 Introduction 1:11 Beginnings of Telecommunication 1:40 Early Radio Communications (HF) 2:26 Wires 3:00 Television and Coaxial Cables 3:47 The Microwave Era Begins (1945) 5:12 TD-2 (1947) 5:42 Cold War Bunkers 6:16 Technical Improvements (1950s-1980s) 9:05 Demise (1970s-1990s) 9:43 Today