| Entry | Description and Significance | Date of Origin | Related Links |
| 1 | Western Electric/AT&T 20-tube coaxial cable, 44-inch length This cable, three inches in diameter and weighing about nine pounds per foot, was a high-capacity communications medium used on some major AT&T Long Lines routes. Entry created 3/5/2006 |
ca. 1970 | |
| 2 | Western Union Desk-Fax facsimile machine Used to transmit images of telegrams between institutional subscribers and Western Union offices, eliminating the need for messengers. Entry created 3/5/2006 |
ca. 1952 | |
| 3 | Western Electric/AT&T microwave systems combining network for dual 6 GHz waveguides (quantity: 2) These networks, mounted near the base of the tower (one network per antenna), allowed a single horn-reflector antenna to transmit or receive horizontally and vertically polarized signals simultaneously, doubling the number of radio channels an antenna could carry, resulting in increased network capacity. Entry created 3/5/2006 |
ca. 1960 | |
| 4 | Western Electric 634A ringer Before bells ("ringers") were built into telephones, they were housed in separate boxes. Entry created 3/5/2006 |
1920s-1930s | |
| 5 | Book, "Principles of Electricity Applied to Telephone and Telegraph Work", 1938 edition A training text for AT&T technical personnel. Entry created 3/5/2006 |
1938 | |
| 6 | AT&T Long Lines Plant Operational Error "scoreboard" Displayed the number of mistakes made by technical personnel at a Long Lines facility in Pennsylvania; illustrated with a hand-drawn motivational poster. Entry created 3/5/2006 |
unknown | |
| 7 | Completed Specifications files from AT&T Long Lines microwave station, Jackie Jones Mountain (Stony Point), NY (approx. 30 binders) Documents describe modifications to the station and its equipment. Entry created 3/8/2006 |
1947-???? | |
| 8 | Wall thermometer with safety slogan "Condition Your Driving to Driving Conditions" Demonstrates the Bell System's emphasis on safety in all types of activities. From the Jackie Jones Mountain, NY station. Entry created 3/8/2006 |
unknown | |
| 9 | Tower lighting controller, electromechanical, Hughey and Phillips Typical of equipment which operated the red aircraft warning beacons on telecommunications towers. Features a motor-driven "see-saw" mercury switch to flash the beacon. Entry created 3/23/2006 |
unknown | |
| 10 | Western Electric 416B vacuum tube A microwave triode instrumental in the development of the Bell System's nationwide TD-2 (4 GHz) microwave radio network. Entry created 3/23/2006 |
ca. 1953 |
|
| 11 | Western Electric K-carrier line amplifier Repeater equipment for an analog frequency-division multiplexed wire-pair cable carrier system widely used in the Bell System's long-distance network for many years. Entry created 3/23/2006 |
1950s? |
Updated on March 23, 2006 at 01:11 by Albert LaFrance
