• Acronyms and Abbreviations, L CXR
• Glossary definition, L CXR System defined
• Transcontinental Cable System ["L System"]
• Transcontinental transmission - Encyclopaedia Britannica
• Analog multiplexing, as employed in the North American telephone system - Encyclopaedia Britannica
• Digital multiplexing, as employed in the North American telephone system - Encyclopaedia Britannica
• Funk & Wagnalls: Telephone

Background, introduction and description:

• L CXR Background
• A detailed description of the L-4 system

• first transcontinental coaxial cable equipped to handle 2400 telephone calls
• First coaxial cable system carries first transcontinental U.S. TV broadcast. (see 1915,
• First coaxial cable system carries first transcontinental U.S. TV broadcast.
• A U. S. Television Chronology, 1875-1970
• private line's Telephone History Page 8 -- 1951 to 1974 by Tom Farley
• COMMUNICATIONS IN THE 20TH CENTURY
• Highlights of the Past 1,000 Years
• The History of Broadcasting: Radio and Television
• HISTORY OF WIRE AND BROADCAST COMMUNICATION (EARLY WIRE TELEGRAPH last pp.)

Route Maps:

Miscellaneous cable photos:

• An L-5 Cable splice
• Comptons - Photo of coaxial cable

P140 Coaxial Cable Removal Project

• P140 Coaxial Cable Removal Project - Socorro, New Mexico to Mojave, California - Draft Environmental Impact Statement
• Environmental Impact Statement (FEIS) for AT&T's P140 Coaxial Cable Removal Project
• Notice of Availability of Abbreviated Final Environmental Impact Statement
• Federal Register, Vol. 63, No. 183, Tuesday, September 22, 1998 (See National Park Service)
• FEDERAL REGISTER INDEX, January--December, 1998 (see P140)

Sites:

• Telecommunications Sites with L Carrier facilities, note footnote 6
• A History of AT&T's Transcontinental Cable Route Through Kentucky
• AT&T Communications TD/TH Microwave And L-Carrier Coax Sites
• AT&T L-Carrier Cable Network in the Mid-Atlantic area and L-5 sites
• The Microwave Radio and Coaxial Cable Networks of the Bell System
• The Ellisville and Windermere, Florida, Underground AT&T sites. See Ellisville narration for photos and description of an underground main station.

Other references:

• Communication infrastructure (Lots of civilian and military system information)
• Transmission History
• System capacities over time
• L-1? deployment (West Coast voice network infrastructure, 1942)
• Technically Speaking (L-1 and L-5E reference on p.4)
• Telephone History
• Telephone History Part 3 -- 1921 to 1984 By Tom Farley
• L4 reference (See SUPERMASTERGROUP)
• Public Policy in Telecommunications (L3, L5 reference)
• IEEE History Center (L1, L3, L4 references)
• Network Synchronization in the PSTN A brief tutorial
• Some L carrier info and references (PDF)

AT&T Long Lines Microwave Towers

Combat Ciders

The ECHO FOX Radio System

Nationwide, etc.

Air Force One Info (Nationwide)

Nationwide

http://www19.addr.com/~longline/tech-equip/radio/BSP402421100/p01.html

http://www.att.com/retirees/encore/12q00/news08.html

Fryer's TowerSource Mesa Communications Group LLC
Comments: Always under construction. Send submissions to long-lines@att.net .