The History Of Radio
When the first radio was invented, it was used by naval officers to communicate on long journeys. It soon became popular with traders and farmers. As the demand for radio increased, manufacturers mass-produced small, portable radio sets for the general public. They were quickly adopted by everyday people, who found that they could make long journeys more enjoyable and that they did not need to take their equipment with them. Nowadays, millions of ordinary citizens use mobile phones, satellite radio and Internet radios to stay in touch with friends and family.
Radio is now widely used throughout many countries as a communication device. A wireless device for transmitting an electric signal from a receiving device through a conducting media to a receiver. This can either be a simple passive or an active device. This article is mostly about the passive radio era, where radio communications systems are widely used.
The development of radio began in the late 1800s when a few scientists developed the world’s first tunable electromagnetic generator (TEG). These generators operated on radio waves rather than regular radio frequencies. In America, radio pioneers George Eastman and John Swan created the first portable transistor radio for general use. These devices worked through receiving and transmitting apparatus connected to each other. In less than two decades, the technology had spread all over the United States.
Throughout World War I and World War II, the use of radio communications increased dramatically. Radio operators were able to transmit live radio broadcasts from locations across the globe to military bases and airfields. Radio operators also were able to send broadcasts to inform people of events and general news. These experiences led to the development of new technology, which today we commonly refer to as the Internet.
With the advent of television, radio once again started to decline in popularity in the United States. The Internet, however, made improvements to the medium. With the growth of Internet service providers in different areas of the country, broadcast stations that were previously unable to connect to cable or satellite Internet services have been able to enter into the digital realm. Today, nearly all major broadcast television networks offer Internet programming. The Internet also allows more broadcast channels to be broadcasted at lower costs to consumers.
Radio frequency interference from cell phones, cordless phones, and wireless computers have become all the rage in recent years. Cell phone users who leave their wireless phones on vibrate mode can inadvertently transmit signals to nearby wireless computers. Cordless phones, in turn, can pick up interfering radio frequencies, which then can be transmitted to nearby devices. Wireless computers act as an antenna to help transmit radio waves. The problem is that cell phones and cordless phones often pick up interference, which then causes them to misbehave.