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United States radio spectrum frequency allocations chart. The FCC has freed 650 MHz of spectrum to increase sharing possibilities for 7GHz and 13GHz bands. (Photo credit: United States Department of Commerce employee via Wikipedia)
These maps are excellent at conveying the limitations of the newly released spectrum for microwave link applications in the 7 GHz (6.875–7.125) and 13 GHz (12.7–13.1) bands. After taking into account the zones that are reserved for existing Fixed and Mobile Broadcast Auxiliary Service (BAS) and the Cable TV Relay Service (CARS) users, these new bands are only available in about 50 percent of the US land mass covering only 10 percent of the population.
What do you think? Should the FCC loosen the spectrum sharing rules even more for 7GHz and 13GHz bands? Take our poll and tell us:
It is with great pleasure that I share with all of you my humble and most sincere homage to Nikola Tesla, the genius and pioneer in what today is our job and passion, wireless communications.
This week of July 10, we are celebrating the 155th anniversary of the birth of Tesla, one of the most important inventors in history. Tesla mastered disciplines such as physics, mathematics and electricity and is considered the father of the alternating current and founder of the electrical industry. His most famous invention was the eponymous Tesla coil, which was a source of electromagnetic energy in early wireless telegraphy systems up until the 1920s.
Among his most important inventions were the radio, the coils for the alternating current electrical generator, the (electrical) induction motor, the sparking bulb, the alternator and the remote control. However, few of these machines were acknowledged as invented by Tesla. In spite of having an amazing mind, being a visionary as well as an intelligent man as few are, he was a mysterious and obscure character, controversial and incapable of obtaining any benefit from his inventions and even saw another man receive the Nobel Prize for one of his own inventions.
People associated him with strange experiments, secret weapons and unrealizable theories that exceeded the utopian and even bordered on insanity. Besides electromagnetism and electrical engineering, Tesla’s work comprises multiple disciplines such as robotics, ballistics, mechanics, computer science and nuclear and theoretical physics, which allowed him to even question some of Albert Einstein’s theories
Although Tesla was not well known, his practical and functional inventions are the source of technologically advanced civilization in such an elemental way that it was said Tesla was the one who invented the 20th century.
Brief Nikola Tesla biography
Nikola Tesla (July 10, 1856 to January 7, 1943) born in Similjan, what at that time was the Austro-Hungarian Empire, which today is part of Croatia. A genius since his early years as a student who was passionate about mathematics and science, he was able to memorize complete books and make complex mathematical calculations to the embarrassment of his professors.
His father, who was an Orthodox pastor, pushed him to follow his religious vocation, but Tesla was more motivated by his mother’s instinct of development, which led her to invent gadgets such as the mechanical egg mixer to help her with house chores. Tesla studied mechanical and electrical engineering in Austria and physics in what would become Czechoslovakia and worked in several electricity and telephone companies throughout Europe.
It is important that I highlight an extra aspect related to free energy. Tesla was a genius who thought that energy should be free of charge, which is why many of his inventions were never to acquire this benefit. Unfortunately, his viewpoint made many important men of the day into his mortal enemies, such as Thomas Alva Edison and George Westinghouse, among others.
Tesla was a great human being with a unique strength of character—to such an extent that he endured with great stoicism when Guglielmo Marconi obtained the 1909 Nobel Prize in Physics using Tesla’s radio patents.
Dear colleagues, as a last tribute to Tesla, let me ask you to take a moment of your time to surf the web and read the great amount of information available about him. Enjoy it and share it, and let’s make that our best tribute to this great inventor who left us not only his teachings about technology but also a message of humbleness.
Thanks for sharing this homage.
Emanuel Jaralampidis Sales Support Engineer, Aviat Networks
Smart Grid is an enabling opportunity for operators to help address energy generation and consumption in an intelligent and efficient manner.
The explanation of Smart Grid solutions in this comparison chart should help to clarify the various choices for wireless connectivity—from access to backhaul, for data or management transmission—using any one or a combination of various technologies.
It compares various wireless technologies for wireless applications related to Smart Grid communications. It also covers general information such as “How to use in Smart Grid,” key advantages and notable weaknesses.
If you like this chart and want to receive a complimentary hard copy version, leave a comment with your name and mailing address (your comment won’t be published). There is an extremely limited number of stock on hand, and we will fulfill as many requests as possible.
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