Wireless Technology
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HowStuffWorks "How the Radio Spectrum Works"

HowStuffWorks "How the Radio Spectrum Works" | Wireless Technology | Scoop.it
AM radio, FM radio, CB radio... These are all different chunks of the radio spectrum. Find out about the thousands of different uses for radio waves!
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How Remote Entry Works

How Remote Entry Works | Wireless Technology | Scoop.it
Modern Security - Do you have one of those key fobs that unlocks your car doors? And maybe even your trunk and your garage door, too? Remote entry devices are the utmost in convenience. Climb inside your car's remote-entry system.
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How does Bluetooth work?

How does Bluetooth work? | Wireless Technology | Scoop.it
An easy-to-understand explanation of what Bluetooth is, how it works, and what it's used for.
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How do satellites work?

How do satellites work? | Wireless Technology | Scoop.it
An easy-to-understand look at how space satellites work, including the different orbits they follow through the sky and their use in global communications.
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What is radio frequency (RF, rf)? - Definition from WhatIs.com

What is radio frequency (RF, rf)? - Definition from WhatIs.com | Wireless Technology | Scoop.it
Radio frequency (RF, rf) measures electromagnetic radio waves, and using antennas and transmitters, it can be used for wireless broadcasting and communications.
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How Wireless Internet Cards Work

How Wireless Internet Cards Work | Wireless Technology | Scoop.it
Wireless Internet cards help many PCs pick up a Internet signal. See how wireless Internet cards, small devices about the size of a credit card work.
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Rescooped by Janet Anderson from wireless home security
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Comcast’s Remote That Controls Everything In The House

Comcast’s Remote That Controls Everything In The House | Wireless Technology | Scoop.it
Comcast, also known as Xfinity, is undoubtedly one of the world’s leading providers of Internet and television. Recently, the company has taken steps to expand their services, while also attempting to draw in new clients. One way they’ve done this is by providing home automation services. The com... http://devconhomesecurity.com/blog/comcasts-remote-that-controls-everything-in-the-house
Via DevConHomeSecurity
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Rescooped by Janet Anderson from Technology in Business Today
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SkySafe bombards unauthorized drones with radio waves to wirelessly bring them down

SkySafe bombards unauthorized drones with radio waves to wirelessly bring them down | Wireless Technology | Scoop.it
SkySafe detects, identifies, and tracks drones, then uses radio frequency signals to wirelessly bring down drones flying without airspace authorization.

Via TechinBiz
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Broadcast Your Own Number Station on the Raspberry Pi

Broadcast Your Own Number Station on the Raspberry Pi | Wireless Technology | Scoop.it
I love number stations, shortwave radio stations from the Cold War that broadcast cyptic messages to operatives out in the field. Some number stations are still in operation today.I thought it would be fun to make one of my own and found something clever and simple by korn101 on Github to get me started. As soon as the Pi is booted up it will automatically start broadcasting your message letter by letter, using the phonetic alphabet.Due to the way the Raspberry Pi broadcasts, it is capability to broadcast outside of the intended FM frequency. This is only intended for fun so please be sensible. I am not responsible for any trouble resulting from your build. Check the laws of your area.

Via F. Thunus
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Rescooped by Janet Anderson from drones
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Taking a look back at the year in drones in 2016 - ReadWrite

Taking a look back at the year in drones in 2016 - ReadWrite | Wireless Technology | Scoop.it
2016 was an incredible year for drones. Drones - especially those with cameras on them - have given us a new perspective on the world around us.

Via Andres Flores
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Patryk Kaźmierski's curator insight, January 25, 5:27 AM

Przegląd dronów z roku 2016.

Rescooped by Janet Anderson from AnalysIR Infrared Anlayzer & Decoder for Arduino, USB IR Toy, Raspberry Pi and more
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Updated ESP8266 NodeMCU Backdoor uPWM Hack for IR signals - AnalysIR Blog

Updated ESP8266 NodeMCU Backdoor uPWM Hack for IR signals - AnalysIR Blog | Wireless Technology | Scoop.it
Updated Firmware sketch & circuit to Send for IR remote control using Esp8266 NodeMCU WiFi module with our Updated ESP8266 NodeMCU Backdoor uPWM Hack for IR signals

...alos features our SendIR module with dual emitters and constant current IR drivers.

Via AnalysIR
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Suspense On Apple’s Mystery 'Wireless Device' Revealed

Suspense On Apple’s Mystery 'Wireless Device' Revealed | Wireless Technology | Scoop.it
Now we have some new information about the mystery Apple device thanks to photos and a user manual published by the FCC.
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When Cars Drive Themselves

When Cars Drive Themselves | Wireless Technology | Scoop.it
There are increasing signs that autonomous cars have arrived — and may be driving our city streets sooner than we think.
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How does GPS satellite navigation work?

How does GPS satellite navigation work? | Wireless Technology | Scoop.it
A simple introduction to GPS: how you can find your way round Earth using signals from space satellites.
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How do antennas and transmitters work?

How do antennas and transmitters work? | Wireless Technology | Scoop.it
An easy-to-follow explanation of how antennas transmit or receive radio waves and the various different kinds of antennas.
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Radio and digital radio | How it works | AM and FM compared

Radio and digital radio | How it works | AM and FM compared | Wireless Technology | Scoop.it
An easy-to-follow introduction to modern digital radios and how they differ from traditional AM and FM (analog/analogue) radios.
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What is radio frequency (RF, rf)? - Definition from WhatIs.com

What is radio frequency (RF, rf)? - Definition from WhatIs.com | Wireless Technology | Scoop.it
Radio frequency (RF, rf) measures electromagnetic radio waves, and using antennas and transmitters, it can be used for wireless broadcasting and communications.
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What is WiFi and How Does it Work?

What is WiFi and How Does it Work? | Wireless Technology | Scoop.it
WiFi is a technology that uses radio waves to provide network connectivity. A WiFi connection is established using a wireless adapter to create hotspots - areas in the vicinity of a wireless router that are connected to the network and allow user
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How WiFi Works

How WiFi Works | Wireless Technology | Scoop.it
Learn how WiFi networks work, build your own wireless network and find the best prices on wireless routers.
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Rescooped by Janet Anderson from wireless home security
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Everything Consumers Should Know About Remote Control Lamps

Everything Consumers Should Know About Remote Control Lamps | Wireless Technology | Scoop.it
As a homeowner in today’s technological crazed society, you should understand the technology could be your worst enemy or your best friend. In order to capitalize on the technology, you truly need to familiarize yourself with home automation and the purpose of remote control lamps in house. A... http://devconhomesecurity.com/blog/everything-consumer-should-know-about-remote-control-lamps
Via DevConHomeSecurity
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Rescooped by Janet Anderson from Amazing Science
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Wi-fi based on infrared rays of light: 100 times faster, and never overloaded

Wi-fi based on infrared rays of light: 100 times faster, and never overloaded | Wireless Technology | Scoop.it

Slow wi-fi is a source of irritation that nearly everyone experiences. Wireless devices in the home consume ever more data, and it’s only growing, and congesting the wi-fi network. Researchers at Eindhoven University of Technology have come up with a surprising solution: a wireless network based on harmless infrared rays. The capacity is not only huge (more than 40Gbit/s per ray) but also there is no need to share since every device gets its own ray of light. This was the subject for which TU/e researcher Joanne Oh received her PhD degree with the ‘cum laude’ distinction last week.

 

The system conceived in Eindhoven is simple and, in principle, cheap to set up. The wireless data comes from a few central ‘light antennas’, for instance mounted on the ceiling, which are able to very precisely direct the rays of light supplied by an optical fiber. Since there are no moving parts, it is maintenance-free and needs no power: the antennas contain a pair of gratings that radiate light rays of different wavelengths at different angles (‘passive diffraction gratings’). Changing the light wavelengths also changes the direction of the ray of light. Since a safe infrared wavelength is used that does not reach the vulnerable retina in your eye, this technique is harmless. 

No interference

If you walk around as a user and your smartphone or tablet moves out of the light antenna’s line of sight, then another light antenna takes over. The network tracks the precise location of every wireless device using its radio signal transmitted in the return direction. It is a simple matter to add devices: they are assigned different wavelengths by the same light antenna and so do not have to share capacity. Moreover, there is no longer any interference from a neighboring wi-fi network.

Data capacity of light rays

Current wi-fi uses radio signals with a frequency of 2.5 or 5 gigahertz. The system conceived at TU Eindhoven uses infrared light with wavelengths of 1500 nanometers and higher; this light has frequencies that are thousands of times higher, some 200 terahertz, which makes the data capacity of the light rays much larger. Joanne Oh even managed a speed of 42.8 Gbit/s over a distance of 2.5 meters. For comparison, the average connection speed in the Netherlands is two thousand times less (17.6 Mbit/s). Even if you have the very best wi-fi system available, you won’t get more than 300 Mbit/s in total, which is some hundred times less than the speed per ray of light achieved by the Eindhoven study.


Via Dr. Stefan Gruenwald
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Rescooped by Janet Anderson from drones
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Studying animal flight to improve robots and drones

Studying animal flight to improve robots and drones | Wireless Technology | Scoop.it
Researchers from Stanford University study the flight of a parrot in order to develop better flying robots and drones. MATLAB used for tracking the vortices.
Via Andres Flores
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Rescooped by Janet Anderson from drones
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What do drones and one of Alfred Hitchcock’s best-ever movies have in common? » Behind the Headlines

What do drones and one of Alfred Hitchcock’s best-ever movies have in common? » Behind the Headlines | Wireless Technology | Scoop.it
Swarming robotic quadcopter drones, modeled after honeybees, help farmers increase crop yield. See how MATLAB was used to help the drones communicate.
Via Andres Flores
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These disintegrating drones are built for one-way missions that save lives

These disintegrating drones are built for one-way missions that save lives | Wireless Technology | Scoop.it
The autonomous craft would be a cheap, disposable way to deliver medical supplies in remote areas or conflict zones.

Via Andres Flores
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It’s not beautiful, but this is how a blazingly fast wireless technology is being hacked together

It’s not beautiful, but this is how a blazingly fast wireless technology is being hacked together | Wireless Technology | Scoop.it
Within a few years, 5G networks could turbocharge your smartphone. But can they pass the tests cooked up by engineers at an office park in New Jersey?
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