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Stromberg-Carlson SC4020
Stromberg-Carlson was a telecommunications equipment and electronics manufacturing company in the United States. It was formed in 1894 as a partnership by Swedish emigration to the United States, Swedish immigrants Alfred Stromberg (1861 Varnhem, Sweden - 1913 Chicago) and Androv Carlson (1854 Tommared, Sweden - 1925 Chicago). It was one of five companies that controlled the national supply of telephone equipment until after World War II.Cohen, ''The Racketeer's Progress: Chicago and the Struggle for the Modern American Economy, 1900-1940,'' 2004. History In 1894, Alexander Graham Bell's expired. Stromberg and Carlson,Chicago employees of the American Bell Telephone Company (later AT&T), each invested $500 to establish a firm to manufacture equipment, primarily subscriber sets, for sale to Independent telephone company, independent telephone companies. Stromberg-Carlson was originally located in Chicago, Illinois, Chicago, with Carlson managing manufacturing and Stromberg r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chicago, Illinois
(''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = List of sovereign states, Country , subdivision_name = United States , subdivision_type1 = U.S. state, State , subdivision_type2 = List of counties in Illinois, Counties , subdivision_name1 = Illinois , subdivision_name2 = Cook County, Illinois, Cook and DuPage County, Illinois, DuPage , established_title = Settled , established_date = , established_title2 = Municipal corporation, Incorporated (city) , established_date2 = , founder = Jean Baptiste Point du Sable , government_type = Mayor–council government, Mayor–council , governing_body = Chicago City Council , leader_title = Mayor of Chicago, Mayor , leader_name = Lori Lightfo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WBZA
WBZA (98.9 FM) is an adult hits station in Rochester, New York. It is owned by Audacy, Inc. (formerly Entercom Communications), who purchased the station from Sinclair Broadcasting in 1999. Before its current format, the station played oldies as WBBF (and before that, WKLX) before that station moved to a lower-powered station broadcasting on 93.3 FM. The station's studios are located at High Falls Studios downtown, and its transmitter tower is on Rochester's west side. History The 98.9 frequency in Rochester has been in continuous use since 1947. Before signing on at its current frequency, the direct predecessor of WBZA, then known as WHFM, broadcast in the old 42-50 MHz FM band. Founded as a sister station to WHAM by Stromberg-Carlson, its daily operation dates back to 1939, making it one of the very oldest surviving FM stations in the United States. As WHFM, the programming format was top 40/CHR from the late 1960s until early 1985. In early 1985 the call letters ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Film Recorder
A film recorder is a graphical output device for transferring images to photographic film from a digital source. In a typical film recorder, an image is passed from a host computer to a mechanism to expose film through a variety of methods, historically by direct photography of a high-resolution cathode ray tube (CRT) display. The exposed film can then be developed using conventional developing techniques, and displayed with a slide or motion picture projector. The use of film recorders predates the current use of digital projectors, which eliminate the time and cost involved in the intermediate step of transferring computer images to film stock, instead directly displaying the image signal from a computer. Motion picture film scanners are the opposite of film recorders, copying content from film stock to a computer system. Film recorders can be thought of as modern versions of Kinescopes. Design Operation All film recorders typically work in the same manner. The image is fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transmission Line Loudspeaker
A transmission line loudspeaker is a loudspeaker enclosure design which uses the topology of an acoustic transmission line within the cabinet, compared to the simpler enclosures used by sealed (closed) or ported (bass reflex) designs. Instead of reverberating in a fairly simple damped enclosure, sound from the back of the bass speaker is directed into a long (generally folded) damped pathway within the speaker enclosure, which allows far greater control and use of speaker energy and the resulting sound. Inside a transmission line (TL) loudspeaker is a (usually folded) pathway into which the sound is directed. The pathway is often covered with varying types and depths of absorbent material, and it may vary in size or taper, and may be open or closed at its far end. Used correctly, such a design ensures that undesired resonances and energies, which would otherwise cause undesirable auditory effects, are instead selectively absorbed or reduced ("damped") due to the effects of the du ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richmond Hill, Georgia
Richmond Hill is a city in Bryan County, Georgia. The population was 16,633 at the 2020 U.S. Census, an increase of almost 80% from the 2010 population of 9,281. Richmond Hill is part of the Savannah Metropolitan Statistical Area. History Richmond Hill has a historical connection to industrialist Henry Ford. Ford used the town, formerly known as Ways Station, as a winter home and philanthropic social experiment, building the complex known as the Ford Farms along the Ogeechee River in the 1930s. After just one visit he chose this area as his winter home. Ford's dwelling was built on the site of Richmond Plantation, which was burned by elements of General William T. Sherman's army at the conclusion of the " March to the Sea". Ford's holdings eventually totaled of agricultural and timber lands, most of which is now owned by the State of Georgia or ITT Rayonier, a timber company. Ford was also responsible for the construction of a number of public buildings, including a kindergar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ericsson
(lit. "Telephone Stock Company of LM Ericsson"), commonly known as Ericsson, is a Sweden, Swedish multinational networking and telecommunications company headquartered in Stockholm. The company sells infrastructure, software, and services in information and communications technology for telecommunications service providers and enterprises, including, among others, 3G, 4G, and 5G equipment, and Internet Protocol (IP) and optical transport systems. The company employs around 100,000 people and operates in more than 180 countries. Ericsson has over 57,000 granted patents. Ericsson has been a major contributor to the development of the telecommunications industry and is one of the leaders in 5G. The company was founded in 1876 by Lars Magnus Ericsson and is jointly controlled by the Wallenberg family through its holding company Investor AB, and the universal bank Handelsbanken through its investment company Industrivärden. The Wallenbergs and the Handelsbanken sphere acquired th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strowger Switch
The Strowger switch is the first commercially successful electromechanical stepping switch telephone exchange system. It was developed by the Strowger Automatic Telephone Exchange Company founded in 1891 by Almon Brown Strowger. Because of its operational characteristics, it is also known as a step-by-step (SXS) switch. History Strowger, an undertaker, was motivated to invent an automatic telephone exchange after having difficulties with his telephone service. He became convinced that the manual telephone exchange operators were deliberately interfering with his calls, leading to loss of business. According to the local Bell Telephone Company manager Herman Ritterhoff, Strowger swore to "get even" with the telephone operators and "put every last one of them out of a job." Ritterhoff claimed that the real cause of Strowger's difficulties was a metal sign hung on his wall over his telephone, causing an intermittent short circuit when blown by the wind. Strowger conceived his ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Next Generation Networking
The next-generation network (NGN) is a body of key architectural changes in telecommunication core and access networks. The general idea behind the NGN is that one network transports all information and services (voice, data, and all sorts of media such as video) by encapsulating these into IP packets, similar to those used on the Internet. NGNs are commonly built around the Internet Protocol, and therefore the term all IP is also sometimes used to describe the transformation of formerly telephone-centric networks toward NGN. NGN is a different concept from Future Internet, which is more focused on the evolution of Internet in terms of the variety and interactions of services offered. Introduction of NGN According to ITU-T, the definition is: :A next-generation network (NGN) is a packet-based network which can provide services including Telecommunication Services and is able to make use of multiple broadband, quality of service-enabled transport technologies and in which serv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genband
Ribbon Communications US LLC is a public company that makes software, IP and optical networking solutions for service providers, enterprises and critical infrastructure sectors. The company was formed in 2017, following the merger of Genband and Sonus Networks and is headquartered in Plano, Texas. History Ribbon Communications was the combination of two companies, each of which had acquired other businesses over their history. Ribbon Communications Ribbon Communications was founded in October, 2017, following the merger of Genband and Sonus Networks in May. Ray Dolan initially headed the combined company, while Walsh led the Kandy business unit. By December, Dolan, who had led Sonus since 2010, resigned. Franklin (Fritz) W. Hobbs was appointed as president and CEO of the combined organization and served in that role until November 2019. In January 2018, the company announced that its session border controllers would be used in the virtual network services of Verizon. In 201 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siemens Digital Central Office
Siemens AG ( ) is a German multinational conglomerate corporation and the largest industrial manufacturing company in Europe headquartered in Munich with branch offices abroad. The principal divisions of the corporation are ''Industry'', ''Energy'', ''Healthcare'' ( Siemens Healthineers), and ''Infrastructure & Cities'', which represent the main activities of the corporation. The corporation is a prominent maker of medical diagnostics equipment and its medical health-care division, which generates about 12 percent of the corporation's total sales, is its second-most profitable unit, after the industrial automation division. In this area, it is regarded as a pioneer and the company with the highest revenue in the world. The corporation is a component of the Euro Stoxx 50 stock market index. Siemens and its subsidiaries employ approximately 303,000 people worldwide and reported global revenue of around €62 billion in 2021 according to its earnings release. History 1847 to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Disney World
The Walt Disney World Resort, also called Walt Disney World or Disney World, is an entertainment resort complex in Bay Lake and Lake Buena Vista, Florida, United States, near the cities of Orlando and Kissimmee. Opened on October 1, 1971, the resort is operated by Disney Parks, Experiences and Products, a division of The Walt Disney Company. The property covers nearly , of which half has been used. The resort comprises four theme parks (Magic Kingdom, Epcot, Disney's Hollywood Studios, and Disney's Animal Kingdom), two water parks ( Disney's Blizzard Beach and Disney's Typhoon Lagoon), 31 themed resort hotels, nine non-Disney hotels, several golf courses, a camping resort, and other entertainment venues, including the outdoor shopping center Disney Springs. On October 1, 2021, Walt Disney World started their celebration of its 50-year anniversary which will last for 18 consecutive months ending on March 31, 2023. Designed to supplement Disneyland in Anaheim, California, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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