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Clearwire Corporation (CLWRD) Message Board

  • indano indano Feb 10, 2013 6:51 AM Flag

    1.5 mile, 3 mile WiFi: Just an Amp & an Antenna

    Same holds true for CLWR spectrum. WiFi = 2.4 GHz, CLWR = 2.5-2.6 GHz
    The "coverage" issue will be solved over night, "as soon as the right players have stolen the spectrum"
    Smart antenna, beamforming, mimo all ready to go. Do a little checking, you'll find plenty of products on the market NOW (for over 2 years) that will extend the range of these 2 GHz+ signals. Stop the freeek'n sandbagging.... Sprint+CLWR = crooks!

    Wilson Electronic offers a complete line of boosters - what's the frreeeek'n problem?!
    AG SOHO 65
    SKU: 805045

    DB Pro
    SKU: 801262

    Amped Wireless gives your WiFi 1.5-mile range: never lose signal in the garden again
    Those of us stationed inside the Engadget compound are always wishing we had better WiFi signal at the outer reaches of the battlements. Thank heavens for Amped Wireless' range of professional networking tools. With a 600mW amplifier and a high-gain bi-directional antenna, its SR600EX Pro Smart Repeater can expand the range of your internet transmissions by up to 1.5 miles. The device also has two extra network ports for other devices and is designed for large buildings, boats, RVs or, you know... massive gadget labs. On the other hand, the AP600EX Pro Access Point can sit on the end of a wired network and do the same job for building-to-building connections. Both devices come with a 30-foot power-over-ethernet cable and are available today for $180.

    FCC Power Output Rules

    Using a larger point-to-point antenna, your beam pattern will cover less area and cause less interference for others. This is why the FCC allows this sliding scale.

    FCC Max Power Limitations
    (When using a directional point to point application)

    Amp power Directional Antenna Total watts
    30dBm or 1W + 6dBi = 3.98

    29dBm or 800mW + 9dBi = 6.35

    28dBm or 630mW + 12dBi = 10.14

    27dBm or 500mW + 15dBi = 15.81

    26dBm or 398mW + 18dBi = 25.23

    25dBm or 316mW + 21dBi = 40.28

    24dBm or 250mW + 24dBi = 62.79

    23dBm or 200mW + 27dBi = 100.2

    WiFi Bridge Kit - Crane
    Connect Point to Point, up to 3 miles
    Rating 5.0
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    Within 1 Business Day.
    Securely beam your network and Internet connection to a second location up to 3 miles away. The WiFi Bridge Kit works like an extremely long ethernet cable that can connect to a device like a computer or router.

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    • This shows how clueless you are.

      The biggest deterrent factors are space limitation and battery power. There is only so much can be fitted inside of a smartphone while antenna(s) and the number of MIMOs (2x2 ... 10 x10) are the biggest power drain culprit in any smartphones. Of course, if your smartphone is as big as your luggage size then ... the sky is the limit.

    • yesmistermorningstarr yesmistermorningstarr Feb 10, 2013 10:20 AM Flag

      What about interference ? How many of these signals can you have in operation without interfernce of each other ?

      • 2 Replies to yesmistermorningstarr
      • The issue is academic: using WiFi for 'Metro-Fi' type applications has been considered, developed and tried for several years. This is looking back on what might be done (by Clearwire or some other funded venture) if given the opportunity to exploit the technology, more advanced as it is these some five years since Metro-Fi had first become a hot topic.

        "Rage against the Machine"

        There are several advantages to building networks as a hybrid of the self-deployable WiFi model and the up-front capital-intensive managed network business model. To build a business on any type of approach requires a plan, the capital, the time, and the overall wherewithal that results in delivering a 'product' that people more than casually want... or want only if its nearly free. The licensed operator business is built on continuous re-investment that requires capturing marketshare at reasonable cost. That necessitates developing a plan that is scaled to the times and circumstances. Nobody can simplify this to say 'the technology works and therefore Halfassed Wireless will be a success'.

      • Easily mitigated. OFDM (WiMAX & LTE) offers improved spread spectrum performance

        for user loading cisco design guide design_guide_c07-693245

        In this example using 30 connections, the application throughput to the end user would be 3.9 Mbps with all 802.11n connections. Other variables, such as user density or environmental noise, can and likely will change over time and will effect the throughput as well.
        Using legacy data rates as a nominal value, Table 3 shows the relationship between cell bandwidth and per connection bandwidth.

        For fixed wireless, you point a narrow beam (yagi) antenna at user. Mitigates interferance due to narrow "field of view"

        CLWR should have been providing high speed wireless data to homes several years ago. Stifled by Sprint and THE CABLE COMPANIES!!!!
        The CABLE COMPANIES bought-in to thwart CLWR efforts!!!

        $8+ NO LESS