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  • Eco Tech Marine brings the internet of things to aquariums

    Catwell
    Catwell
    During my research for “Project Goldie,” I found fish tanks have come a long way over the past couple of decades. Materials and technology advances have made it easier than ever to keep aquariums clean, pump in fresh oxygen, and provide a proper nutr...
    • 27 Nov 2013
  • Transceivers on a Plane

    gervasi
    gervasi
    Until the rule change last month, all my adult life portable electronic devices (PEDs) have not been allowed on commercial flights below 10,000 feet.  Electronic devices were less common in the 80s and 90s, so people paid less attention the rule...
    • 26 Nov 2013
  • Toshiba releases new FlashAir SDHC memory cards featuring wireless LAN

    Catwell
    Catwell
    Toshiba’s FlashAir memory card. (via Toshiba)In a world where Wi-Fi can be found incorporated into just about everything, it only made sense that Toshiba would incorporate it into their new line of SDHC memory cards. Their new 32GB SDHC (Secure Digit...
    • 20 Nov 2013
  • Eerie Shortwave Signals

    gervasi
    gervasi
    Because of shortwave signals’ ability to bounce off the upper atmosphere, sounds coming through the headphones of a shortwave could originate anywhere in the world.  Most of them come from religious organizations or governments promoting their v...
    • 28 Oct 2013
  • Bad Antennas

    gervasi
    gervasi
    There's a saying in EMI that any conductive feature longer than a quarter wavelength can be an antenna.  All it takes is one piece of metal a quarter wavelength long and another piece of metal to be the “ground” or the other half of the dipole. ...
    • 23 Oct 2013
  • Brando Wireless Power Bank 4800mAh review

    sleuz
    sleuz
    Brando Wireless Power Bank 4800mAh reviewby Julie Strietelmeierfrom the gadgeteer  I like products that make my life easier and save me time, even if it’s only a couple seconds. The Wireless Power Bank 4800mAh from Brando ticks both of thos...
    • 11 Oct 2013
  • Bluetooth Low Energy SoCs

    gervasi
    gervasi
    I recently had the opportunity to test the Nordic nRF51822 Semiconductor System-on-a-Chip (SoC), which contains a Bluetooth Low Energy (BLE) transceiver and an ARM Cortex M0 processor to run the BLE stack.   The Bluetooth Low Energy chip I ...
    • 10 Oct 2013
  • Quantum Communications

    gervasi
    gervasi
    Quantum is the preferred adjective in space operas to ask the audience to suspend disbelief on something technical that doesn’t make sense.  If there is a scenario where you to have something, say “Communication”, but it would not make sense for...
    • 30 Sep 2013
  • The Best HD Radio Receiver

    gervasi
    gervasi
    A few weeks ago when I started researching HD Radio, I found that there are few high-quality receivers.   I asked Jessica Crotty of C. Crane, a high-end radio retailer, which radio they recommended.  The answer was none of them.  ...
    • 18 Sep 2013
  • FDR Testing Feedline Using VIA Echo

    gervasi
    gervasi
    What kind of practical information can we get when we connect a frequency domain reflectometry (FDR) analyzer to coax going to antenna outside?  Last year when I reviewed the AEA Technology VIA Echo VNA, I covered the VNA and spectrum analyzer f...
    • 6 Sep 2013
  • Bluetooth Low Energy

    gervasi
    gervasi
    In the past year Bluetooth low energy (BLE) has seen a surge in popularity.  Despite its name, BLE is not that similar to conventional Bluetooth.  One of its selling points is that you can design a BLE device to run off a 230mAh CR2032 Li c...
    • 23 Aug 2013
  • Progress in Bluetooth v4.0 support in Smartphone OS

    simone.saile
    simone.saile
    For all appcessory device manufacturers support of Bluetooth v4.0/Bluetooth Smart/Bluetooth Low Energy in Smartphone OS is the key to success. Apple with it's iPhone 4s and successor iPhone 5 has been the first smartphone manufacturer supporting Blue...
    • 23 Aug 2013
  • Smallest Qi-Enabled Wireless Charging Pad On The Market

    sleuz
    sleuz
    The Smallest Qi-Enabled Wireless Charging Pad Is Released by EsorunThis stylish round Qi-enabled wireless charging pad is the smallest wireless transmitter whose size is only 58(D)*10.4(T)mm. Elf possesses a built-in USB cable and is a green DIY wire...
    • 23 Aug 2013
  • Glowdeck portable speaker system does a wireless double act

    sleuz
    sleuz
    Pre-order your Glowdeck nowpower - light - sound www.youtube.com/watch Smartphone users on the lookout for battery-powered wireless chargers, Bluetooth music players, and funky smart lights that bop to the beat will likely have to settle fo...
    • 8 Aug 2013
  • Submit Entries Now: Bluetooth®︎ Breakthrough Awards

    simone.saile
    simone.saile
    From now on it is possible to submit your application for the Bluetooth Breakthrough Awards in four different categories: Breakthrough Products—entries for products launched in 2013 and available for purchaseBreakthrough Applications—entries for soft...
    • 7 Aug 2013
  • Wireless Charging Flip Cover for the Samsung Galaxy S4

    sleuz
    sleuz
    Monster Watts, an innovator of mobile phone wireless charging accessories, is introducing the 5 in 1 iQ View wireless charging flip cover for the Samsung Galaxy S4. Despite the light and thin design, it still manages to combine:Wireless charging...
    • 7 Aug 2013
  • Panasonic Wireless Connectivity Products at Texas Instruments.dahoam – Innovative Technologien Event

    simone.saile
    simone.saile
    On 26th of September 2013 Texas Instruments is hosting »Texas Instruments.dahoam - Innovative Technologien«in Regensburg, Germany.  Panasonic Industrial is joining this event with the Wireless Connectivity product range. Come and visit us. &nbsp...
    • 31 Jul 2013
  • In Search of a Good HD Radio

    gervasi
    gervasi
    After having decent results testing my first HD Radio, I bought a JVC KT-HDP1 HD Radio receiver to test AM HD Radio.  The performance was disappointing. The connectors were unusual sizes, except for the headphone output.  None of the c...
    • 20 Jul 2013
  • Testing HD Radio

    gervasi
    gervasi
    A few months ago someone asked me where to find an HD radio.  Despite my interest in radio, I had heard of HD but knew almost nothing about it.   When I researched it, I learned that digital broadcasting (as expected) is much more effi...
    • 19 Jul 2013
  • Industrial Wireless - Channel Access Latency

    gervasi
    gervasi
    In the past few weeks, I’ve written about challenges of industrial wireless (with a focus on Wi-Fi): multipath and interference.  This last post will be about the greatest challenge: channel access latency. What is Fast?What does it mean wh...
    • 19 Jul 2013
  • Industrial Wireless Challenges: Interference

    gervasi
    gervasi
    Recently I have been writing about the challenges I have experienced with industrial wireless compared to those discussed in the most recent issue IEEE Communications Magazine.  Last week I wrote about multipath in industrial settings.  Thi...
    • 18 Jul 2013
  • Multipath in Industrial Wi-Fi Links

    gervasi
    gervasi
    Last week an IEEE Communications article on industrial wireless reminded me of when I first learned how well Wi-Fi radios can work over long distances.  Today I would like to write about how multipath reflections present a problem for Wi-Fi in i...
    • 6 Jul 2013
  • Industrial Wi-Fi

    gervasi
    gervasi
    A recent article about the difficulties of Machine-to-Machine wireless reminded me of when I first learned about industrial wireless nine years ago.  I was starting a job in the wireless department of a company focused on industrial automation c...
    • 30 Jun 2013
  • Wireless Free-for-All

    gervasi
    gervasi
    I am always impressed at how crowded but usable the ISM bands are.  Their popularity shows how many users prefer to share a crowded band than to get clear frequencies licensed by the government.  Spectrum sharing is a microcosm of the human...
    • 26 Jun 2013
  • Amateur Two-Way Radio

    gervasi
    gervasi
    Earlier this week I wrote about the two-way radio show I attended.  Handling the high-end radios designed for commercial and public safety use reminded me of how twenty years ago my friends and I in used to use these radios as ham radios.  ...
    • 19 Jun 2013
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