Telecommunication systems are based on a series of crucial concepts. Over the last century, these concepts have grown and evolved. A transmitter transmits information from one location to another, and a receiver receives the signal and converts it to usable information. While the basic concept is simple, the process has been complicated and involves several moving parts. Learn how telecommunication works below. And don’t be surprised if you come across new terms or concepts along the way!
The most basic idea behind telecommunication is that it allows companies to move large quantities of data over long distances. The Internet is a prime example of this. But telecommunication systems are so much more advanced than that. They’re redefining how we communicate with one another. Previously, audio and visual signals were the primary means of communication, but today, everything is connected via cables and electromagnetic fields. Telecommunication networks are now a massive part of our lives.
The fundamentals of telecommunication systems are complex, but there’s a simple explanation for how a radio broadcast works. First, a central broadcast tower sends a high-frequency electromagnetic wave. This wave is then filtered to transmit audio and visual information. The broadcast signal is then received by low-powered receivers, tuned to pick up the signal, and then processed by a demodulator.
The Most Common Types Of Coaxial Cables used in Telecommunication in the 20th Century
There are many types of telecommunication cables. The most common types are coaxial and fiber optic cables. Fiber optic cables can carry much more data than coaxial cables. While twisted pair cables have been around for many years, they’re getting phased out in the communications industry. While coaxial cables are still widely used in cable TV, they’re also old and less efficient than fiber optic cables. Twisted pair cables use strands of copper wire twisted into pairs. The wire is commonly used for telephones and fax machines, while the flat cable is used in some modems.
Coaxial Cables:
Coaxial cables feature a copper core surrounded by two outer metal shields. This allows the cable to be installed next to other metal objects while minimizing interference. Twinaxial cables, on the other hand, are a hybrid of two coaxial systems. Twinaxial cable was developed in 1929 and first used commercially in 1941. Before fiber was introduced, AT&T established the first cross-continental coaxial transmission system.
Twisted Pair:
Another type of telecommunication cable, the twisted pair, is used to connect a home computer to a telephone company. A twisted pair cable is a good choice for home use because it’s a standard wire used to connect phones and desktop locations. Its two wires are designed to minimize interference and handle a wide range of frequencies. Besides this, twisted pair cable is more durable than coaxial cables.
History of Telecommunication Systems in the 20th Century
The introduction of telecommunication systems to the world changed the way people lived. During the 20th century, the first commercial radio-telephone service was established by AT&T in 1934. In 1946, Southwestern Bell developed a mobile phone service. The mobile phone service was limited due to the cost and complexity of installing the mobile phone network. In 1956, the first 36-circuit telephone cable was installed from Newfoundland to Scotland.
In the United Kingdom, radio-telephone service was established in 1927, bringing telecommunication to the rest of the world. In 1972, the first transatlantic telephone cable was laid, connecting the U.S. and the U.K.The telephone network quickly spread across nations, and cables connected the national networks. A new international network was formed over the Atlantic Ocean in the mid-1950s.
While this was a significant breakthrough, telegraph cables had very poor reception, and transmission of Morse characters took up to two minutes. By the end of the century, the first commercial telegraph line was abandoned. However, the telegraph system would soon surpass the telegraph cable’s limitations and become the dominant form of communication in the world.
Another significant change was the development of fiber optics, which revolutionized the industry more than any other technology in the 20th century. Today, a single thread of glass fiber can carry as much voice traffic as thousands of copper lines, breaking the old boundaries of telecoms.
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