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Telegraph service permitted short texts to be sent cheaply and arrive in a matter of minutes to hours, instead of days or weeks. Telegraphy facilitated faster and more profitable freight and passenger railway traffic, consolidated financial and commodity markets, sped political news and commentary, and lowered information costs for companies. [1]
Contemporary map of the 1858 transatlantic cable route. Transatlantic telegraph cables were undersea cables running under the Atlantic Ocean for telegraph communications. . Telegraphy is an obsolete form of communication, and the cables have long since been decommissioned, but telephone and data are still carried on other transatlantic telecommunication
Original major radio broadcasting networks in the United States The WEAF and WJZ chains. Following the introduction of radio broadcasting in the early 1920s, the American Telephone and Telegraph Company (AT&T) developed the first radio network, linking together individual stations with specially prepared long-distance telephone lines in what at the time was called a "chain".
Cable radio is radio broadcasting into homes and businesses via a cable. This can be a coaxial cable used for television, or a telephone line. It is generally used for the same reason as cable TV was in its early days when it was "community antenna television", in order to enhance the quality of over-the-air radio signals that are difficult to ...
Then came the rise of pay TV, particularly cable, which helped encourage the advent of prestige TV, led by HBO in the late 1990s and early 2000s with classics like “The Sopranos,” “The Wire ...
In countries that had a PTT unit of government, typically the vast majority of forms of distribution of information fell under the auspices of the PTT, whether that be the delivery of printed publications and individual letters in the postal mail, the transmission of telephonic audio, or the transmission of telegraphic on-off signals, and in some countries, the broadcast of one-way (audio ...
Postal partnered with Commercial Cable Company for overseas cable messaging. Postal was founded in the 1880s by John William Mackay, an entrepreneur who had made a fortune in silver mining in the Comstock Lode. Mackay's original purpose was to provide a domestic wire network to directly link with the Atlantic Cable. Mackay built the Postal ...
This approach had a major advantage over standard telegraph and telephone lines, because radio signals can readily jump over any small gaps in cases when there is a line break. In May 1918, the Imperial Japanese Electro-Technical Laboratory of Tokyo successfully tested "wave telephony" over the Kinogawa Hydro-Electric Company's 144-kilometer ...