The basis of this post is to make you consider what in life is important and what does getting the new earpiece really mean to people
Businessman. What is a successful businessman? It is a successful man who feels confident in front of a large audience. Successful businessman can exhibit his ideas in a convincing manner. And now the question? Do you think he has all these abilities given to him by nature? Of course, they aren’t! You can also feel persuasive and confident if you use spy gsm gadget. You can receive necessary information in real time by this gadget while carrying on negotiations. … Read More
(Asked by ‘Scottish’ Pete from Woolwich)
Hey Pete, how’s everything? Thanks for your question.
…And what a question it is. The modern two-way radio, which is a direct descendent of the WW2-era Walkie-talkie, first became recognizable in the years just before the outbreak of World War 2. Its origins are an interesting story in their own right (but I’ll condense it here).
Three names are usually mentioned with regards to the invention of the walkie-talkie… … Read More
Robots are in the news a lot lately. From Google’s mysterious plans to do something vaguely robotic over the next ten years (we’re not allowed to know exactly what), to Amazon’s proposal to build flying drones for international deliveries, it seems that the metal munchkins are everywhere, but none are as cute, nor as interesting, as Kirobo.
Resembling a cross between a mid-90’s SNES protagonist and an overgrown Lego man, Kirobo the robot stands at just 33CM tall (which is still positively gargantuan for a Lego man). His claim to fame? Kirobo is the world’s first robot astronaut and is currently orbiting the Earth aboard the International Space Station (ISS), where he has been since August of this year. … Read More
2013 has been a roller coaster year for tablets and for technology in general, and although a lot of that can be attributed to a giant lamp voiced by Bill Nighy (and if you missed the reference then you missed out on one of the year’s best movies), even more still can be ascribed to the good taste and ludicrously high standards (“what do you mean there’s no ‘time travel’ app!?) of YOU, the British consumer.
In order to continue this upward trend, we put our heads together and compiled a list of the year’s best tablets. You may be surprised at what comes first (actually, no, you won’t. We’ll say that right now. There are no surprises waiting for you at number one). Anyway, read on… … Read More
Radio is the wireless transmission of signals through free space by electromagnetic radiation of a frequency significantly below that of visible light, in the radio frequency range, from about 30 kHz to 300 GHz. These waves are called radio waves. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space.
Information, such as sound, is carried by systematically changing some property of the radiated waves, such as their amplitude, frequency, phase, or pulse width. When radio waves strike an electrical conductor, the oscillating fields induce an alternating current in the conductor. The information in the waves can be extracted and transformed back into its original form.
The etymology of “radio” or “radiotelegraphy” reveals that it was called “wireless telegraphy”, which was shortened to “wireless” in Britain. The prefix radio- in the sense of wireless transmission, was first recorded in the word radioconductor, a description provided by the French physicist Édouard Branly in 1897. It is based on the verb to radiate .
The word “radio” also appears in a 1907 article by Lee De Forest. It was adopted by the United States Navy in 1912, to distinguish radio from several other wireless communication technologies, such as the photophone. The term became common by the time of the first commercial broadcasts in the United States in the 1920s. The term was adopted by other languages in Europe and Asia. British Commonwealth countries continued to commonly use the term “wireless” until the mid-20th century, though the magazine of the BBC in the UK has been called Radio Times ever since it was first published in the early 1920s.
In recent years the more general term “wireless” has gained renewed popularity through the rapid growth of short-range computer networking, e.g., Wireless Local Area Network, Wi-Fi, and Bluetooth, as well as mobile telephony, e.g., GSM and UMTS. Today, the term “radio” specifies the actual type of transceiver device or chip, whereas “wireless” refers to the lack of physical connections; one talks about radio transceivers, but another talks about wireless devices and wireless sensor networks.
Radio systems used for communications will have the following elements. With more than 100 years of development, each process is implemented by a wide range of methods, specialized for different communications purposes.
Transmitter and modulation
Each system contains a transmitter. This consists of a source of electrical energy, producing alternating current of a desired frequency of oscillation. The transmitter contains a system to modulate some property of the energy produced to impress a signal on it. This modulation might be as simple as turning the energy on and off, or altering more subtle properties such as amplitude, frequency, phase, or combinations of these properties. The transmitter sends the modulated electrical energy to a tuned resonant antenna; this structure converts the rapidly changing alternating current into an electromagnetic wave that can move through free space.
Amplitude modulation of a carrier wave works by varying the strength of the transmitted signal in proportion to the information being sent. For example, changes in the signal strength can be used to reflect the sounds to be reproduced by a speaker, or to specify the light intensity of television pixels. It
was the method used for the first audio radio transmissions, and remains in use today. “AM” is often used to refer to the mediumwave broadcast band .
Frequency modulation varies the frequency of the carrier. The instantaneous frequency of the carrier is directly proportional to the instantaneous value of the input signal. Digital data can be sent by shifting the carrier’s frequency among a set of discrete values, a technique known as frequency-shift keying.
FM is commonly used at VHF radio frequencies for high-fidelity broadcasts of music and speech . Normal TV sound is also broadcast using FM.
Angle modulation alters the instantaneous phase of the carrier wave to transmit a signal. It is another term for Phase modulation.
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I am a vinyl fan. You’ve never heard of most of my favourite bands, and if you have, you won’t like them. Modern music leaves me extremely cold. I’m a fan of most styles, but the current production methods (lets bury everything under a million layers of random sounds just because we can, then we’ll get rid of all background sound and make everything pitch-perfect and soulless) are lost on me.
As you can imagine, I came to MP3 rather late. For the longest time I wandered around with a portable CD player in my pocket that skipped if I moved even a step too fast. It ran on batteries that would run out regularly and was, generally, a pain. However, I persevered with it because I’m a compulsive music addict. The rock, blues, folk and reggae tunes I listen to daily are the soundtrack to my life. … Read More
Google has officially announced that it has acquired seven robotics companies in the last six months, with the ultimate aim of creating a Google robot.
As far-fetched as it might sound, the firm’s takeover of companies like ‘Bot & Dolly’, ‘Industrial Perception’, ‘Autofuss’ and ‘Redwood Robotics’ is a clear sign that Google has big plans in this area. … Read More
This is going to be a ‘damned if you do, damned if you don’t’ type thing. The debate you’re dragging me into here, is actually a long and storied one (with both sides making good points along the way). So here goes…
Basically, it all depends on what you need the device in question to do.
The tablet PC has not supplanted the laptop (not yet anyway) and, in fact, the average tablet cannot hope to contain the amount of information that can be stored in a laptop. Also, unless you are an ‘Angry Birds’ fanatic, never, ever think of a tablet as a gaming device. … Read More
NASCAR officials have enthusiastically embraced MOTOTRBO, and they applaud the benefits it has brought to the NASCAR experience. Smooth Management of Communications Traffic MOTOTRBO “does a super job for us,” according to Kerry Tharp, Director of Communications, NASCAR. “You have to communicate pre-race, during the race, and most importantly for us, post-race because when the race is over, that’s when our media operation kicks in for us full-bore. We bring in our top three drivers for interviews; we bring in our winning driver to the victory lane, and we also check in on the garage to make sure that post-race is going along as it should. We have to make sure we’re communicating quickly and concisely. Through MOTOTRBO, we’re able to do our jobs a whole lot better than we have in the past.” … Read More
2012 is finished and we would like to wish everybody a happy Christmas along with a Wonderful New Year