Two way radios are one of the first ways by which people separated by a geographical distance can start to communicate, the electric telegraph and the carrier pigeon being the others. Heinrich Rudolf Hertz, a famous German physicist, is the first person who indirectly permitted the creation of two way radios.
In the late 1800s, Heinrich Rudolf Hertz demonstrated that it was possible to transmit electricity as electromagnetic waves. Because he did not measure the practical use of his creation, Heinrich Rudolf Hertz decided to abandon those works considering that his invention would not benefit to anyone. However, history tells us that Hertz was not right.
A couple of years later, two other inventors, Nikola Tesla and Gugliemo Marconi, gathered and furthered the research and experiments conducted by Hertz. Nikola Tesla was successful in proving that electromagnetic waves could be transmitted wirelessly. Both Nikola Tesla and Gugliemo Marconi built a radio although for different purposes. Indeed, Nikola Tesla created a radio as part of his demonstration on how to transfer electromagnetic waves wirelessly, while Gugliemo Marconi obtained a patent for his invention and then opted for the launching of a business that was selling the radios.
There were many improvements in radio transmissions afterwards, but perhaps the vaccuum-tube technology is the one that impacted the most until World War I. Effectively, this technology enabled the radios to cover a longer range of transmissions, which was extremely useful during the First World War. Initially, the pilots needed to land in order to either deliver or take a message, but with the implementation of the vacuum-tube technology on the radios and thus the enhancement of military broadcasts, communications could be done with the pilots still in the air. During that same period, a substantial number of civilians acquired this technology and opened their own broadcast as they had identified the practicability of the enhanced radio.
Two way radios were first seen in New Jersey as the Beyonne police department was trying to develop a way to better address emergencies. This technology then experienced success to the extent it was widely used during the Second World War for various purposes such as air and ground communications. The first two way radio system that was built was named simplex mode mainly because it was not able to receive multiple signals at once. The simplex mode then evolved to be able to connect different frequencies and was called full duplex.
A regular two way radio is made with several parts: the transmitter, the antenna, the speaker, the range, and the tone control. The transmitter sends the signal to another radio, which allows two people to communicate. The antenna is the item that enables the transmitter to send a signal and receives the one that is sent in response. The speaker allows the user to communicate vocally with another individual and can convert all the vocal messages sent in response. The range is the distance covered by the two way radio system. If two persons are relatively close to each other, they may communicate using a simplex two way radio. But if the first individual is not certain about the location of their correspondent, then they should use a repeat two way radio.
The progress that two way radios have experienced is incredible. As mentioned above, this technology was used for specific purposes and one can imagine that it required those who wanted to use it to be well versed in the field of communications. Today, even toddlers can use two way radios since these devices have undergone progressive simplification. Cell phones are considered to be an illustration of the development of Giuglemo Marconi’s invention.
In the late 1800s, Heinrich Rudolf Hertz demonstrated that it was possible to transmit electricity as electromagnetic waves. Because he did not measure the practical use of his creation, Heinrich Rudolf Hertz decided to abandon those works considering that his invention would not benefit to anyone. However, history tells us that Hertz was not right.
A couple of years later, two other inventors, Nikola Tesla and Gugliemo Marconi, gathered and furthered the research and experiments conducted by Hertz. Nikola Tesla was successful in proving that electromagnetic waves could be transmitted wirelessly. Both Nikola Tesla and Gugliemo Marconi built a radio although for different purposes. Indeed, Nikola Tesla created a radio as part of his demonstration on how to transfer electromagnetic waves wirelessly, while Gugliemo Marconi obtained a patent for his invention and then opted for the launching of a business that was selling the radios.
There were many improvements in radio transmissions afterwards, but perhaps the vaccuum-tube technology is the one that impacted the most until World War I. Effectively, this technology enabled the radios to cover a longer range of transmissions, which was extremely useful during the First World War. Initially, the pilots needed to land in order to either deliver or take a message, but with the implementation of the vacuum-tube technology on the radios and thus the enhancement of military broadcasts, communications could be done with the pilots still in the air. During that same period, a substantial number of civilians acquired this technology and opened their own broadcast as they had identified the practicability of the enhanced radio.
Two way radios were first seen in New Jersey as the Beyonne police department was trying to develop a way to better address emergencies. This technology then experienced success to the extent it was widely used during the Second World War for various purposes such as air and ground communications. The first two way radio system that was built was named simplex mode mainly because it was not able to receive multiple signals at once. The simplex mode then evolved to be able to connect different frequencies and was called full duplex.
A regular two way radio is made with several parts: the transmitter, the antenna, the speaker, the range, and the tone control. The transmitter sends the signal to another radio, which allows two people to communicate. The antenna is the item that enables the transmitter to send a signal and receives the one that is sent in response. The speaker allows the user to communicate vocally with another individual and can convert all the vocal messages sent in response. The range is the distance covered by the two way radio system. If two persons are relatively close to each other, they may communicate using a simplex two way radio. But if the first individual is not certain about the location of their correspondent, then they should use a repeat two way radio.
The progress that two way radios have experienced is incredible. As mentioned above, this technology was used for specific purposes and one can imagine that it required those who wanted to use it to be well versed in the field of communications. Today, even toddlers can use two way radios since these devices have undergone progressive simplification. Cell phones are considered to be an illustration of the development of Giuglemo Marconi’s invention.
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