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Alfa 1000mW 1W 802.11b/g USB Wireless WiFi Network Adapter With Original Alfa Screw-On Swivel 9dBi Rubber Antenna


Alfa 1000mW 1W 802.11b/g USB Wireless WiFi Network Adapter With Original Alfa Screw-On Swivel 9dBi Rubber Antenna


The Alfa AWUS036H is the latest version of the most powerful card available. This has a stunning 1000mW output power. So if you are looking for a device to connect to an outdoor 2.4 GHz antenna, such as on a boat or an RV, this is a perfect solution. It outperforms wireless cards that are built in to newer laptops. Adding this to your laptop or desktop computer will enhance range and signal quality at longer distances. And works with Win98SE/200/ME/XP, Windows Vista, Windows 7, Linux (kernel 2.6.6 and later) and Macintosh (OS version 10.4). And the necessary drivers for ALL of these operating systems are included on CD-ROM.

  • Includes a 4-inch 5 DdBi and a 9 DdBi Screw-On Swivel Rubber Antenna
  • Includes driver for Windows 2000, XP 32/64, Vista 32/64, Windows 7, Linux (2.4.x/2.6.x), Mac (MacOS 10.3 – 10.5) For MAC OS 10.6.7 and later version, we suggest AWUS036NHR, AWUS036NH, AWUS036NEH, AWUS051NH.
  • High security 64/128/256bit WEP Encryption, TKIP, 802.1X support, Wi-Fi Protected Access – WPA, WPA-PSK, WPA II
  • Plug-and-Play Compatible with windows 98SE, 2000, Millennium, XP and Linux
  • Compact size for greater flexibility

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What customers say about Alfa 1000mW 1W 802.11b/g USB Wireless WiFi Network Adapter With Original Alfa Screw-On Swivel 9dBi Rubber Antenna?

  1. 92 of 95 people found the following review helpful
    5.0 out of 5 stars
    WOW! works beyond expectations!, May 16, 2009
    By 
    Burlyn Jackson “billy66bare” (billy66bare) –
    (REAL NAME)
      

    Amazon Verified Purchase(What’s this?)
    This review is from: Alfa 1000mW 1W 802.11b/g USB Wireless WiFi Network Adapter With Original Alfa Screw-On Swivel 9dBi Rubber Antenna (Electronics)

    We kinda bought this figuring it was “snake oil”. Well, we were wrong…dead wrong! We plugged this into the Vista laptop, Vista found it and we were using it in less than 1 minute, and to our surprise it picked up our neighbor’s router 1000 ft down the road and on the other side of his house! We used to get his signal intermittently on the laptop, but with this plugged in with the hi-gain antenna, we get 4 out of 5 bars! This is through tall, thick trees and a motor home!
    When the first reviewer (I read)says it got her father in law’s signal 1000 feet or yards down the road, she isn’t lying!!!

    I just put it on my Windows 7 desktop and it works just the same. I just plugged it in, and windows found it, installed drivers and it’s fine.

    I ALWAYS suggest going online for the latest drivers for any computer hardware, but this one seems to work fine off of Windows Vista and 7’s proprietary drivers.

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  2. 34 of 35 people found the following review helpful
    5.0 out of 5 stars
    Excellent USB Wireless Adaptor, January 6, 2010
    A Kid’s Review
    This review is from: Alfa 1000mW 1W 802.11b/g USB Wireless WiFi Network Adapter With Original Alfa Screw-On Swivel 9dBi Rubber Antenna (Electronics)

    The Alfa USB wireless adapter works very well in both Windows and Linux. Using the internal wireless adapter in my Asus 1000HA netbook, I could only detect a few networks in my neighborhood. After attaching this adapter, I was able to detect 15+ networks.

    The Alfa adapter works great with Backtrack, as I’m sure you’ve read from various forums. The card allows for monitor mode, packet injection, etc. If you’re looking for a card for wireless pen-testing, then this is the one for you. You will not be disappointed.

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  3. 258 of 306 people found the following review helpful
    4.0 out of 5 stars
    The Alfa 1000mw/1 Watt Wi-Fi Wirless Transceiver is A+ but it won’t always produce 1 watt of output, See why as well as advice.., February 1, 2010
    By 
    C. Hazlitt
    (REAL NAME)
      

    Amazon Verified Purchase(What’s this?)
    This review is from: Alfa 1000mW 1W 802.11b/g USB Wireless WiFi Network Adapter With Original Alfa Screw-On Swivel 9dBi Rubber Antenna (Electronics)

    Alfa 1000mW 1W 802.11b/g USB Wireless WiFi Network Adapter

    This review is more for the technically oriented group who want to look more deeply into the technology but written in easy to understand terms.

    From what I’ve seen there is nothing better you can buy anywhere right now. However, let me point out that the 1000mw/1 watt output rating might not always be true but before I start on that let me outline what I like about the unit:

    1. The Wi-Fi transceiver produces far more power than what any laptop computer or external Wi-Fi transceiver I know of will output.
    2. Has a “RP” or what is called reverse polarity coaxial antenna connector which allows me to use a higher gain antenna. See my notes on this type of connector further in this review.
    3. Is external and powered by a USB cord allowing me to place the unit with its whip antenna at a better spot than where my computer is at, up to about 15 feet away if using a USB extension cable.

    OK, to get to my question of whether the Alfa produces the amount of RF power they say it can:

    I was curious if this unit could really produce 1 watt of output power, it seemed far too light weight to do that so I took my AWUS036H unit and fed its RF output into a lab quality spectrum analyzer on maximum hold to record its highest RF carrier level power output as it pulsed to interrogate a remote Wi-Fi system, which of course it couldn’t while hooked up to the spectrum analyzer instead of an antenna. I was right about the lower output power, I measured the output to be about 250 mw or +24 dBm, that’s 6 dB lower than its advertised power capability of +30 dBm which is four times lower output than the specified 1000mw/1 watt (The difference between +24 and +30 dBm is a factor of -6 dB which as a logarithmic power factor is four times less power). Just to be clear to the folk who don’t work with decibels or dB; +30 dBm (referenced to 1 mw/milliwatt) is 1000 mw or 1 watt or +30 dBm = 1 watt.

    IMPORTANT: If you have the one watt output version of this Alfa and have the dual USB cable they are now providing with the units which plugs into two USB receptacles at the same time do so! The second USB connector is needed due to the high current demand of the higher power unit, one is for data the other for more current supply to the Alfa. I did not know this and only used the one USB connector which passed both data and power and now that USB port on my computer does not work. Apparently, too much current had been drawn and damaged it. I expect there is an automatic current limitation built into most computers but in my case it did not prevent the USB port from becoming damaged. Mine ran fine for a week with just one of the USB connectors plugged in to my computer but it eventually caused that port to fail. I would have used both ports but I needed the other USB port for something else, unknowing the resulting damage that action would produce leaving me with just one good USB port on that laptop now.

    Finding that my Alfa only produced one forth the advertised RF power output I figured either Alfa was misrepresenting its true output or I had a defective unit. I then went to the Alfa web site and found some specs for the unit, their specs show this unit has different output levels for different modes of modulation! For OFDM modulation the RF output is rated at +24 dBm which is 250mw or a quarter of a watt/.25 watt. When using CCK modulation the output is rated at the full +30 dBm output which is 1000mw/1 watt. So, you don’t really get a full watt of output in some modes of operation! From what I’ve been able to find on the net regarding these two kinds of modulation is that the Alfa is rated at less power for OFDM because the efficiency of its built in power amplifier is fairly low due to requiring the amplifier to operate in a highly linear manner which is less efficient producing less output power where CCK modulation does not require the amplifier to be linear and thus more efficient producing more output power. I am still trying to determine if CCK is a short burst of data and OFDM a longer or continuous transmission which would also explain why one mode allows more output power over the other, if the shorter bursts allow the amplifier to transmit a higher peak of power without overheating. I have not found what I’m looking for on this yet, when I do I will update this review. (More on CCK and OFDM at the bottom).

    According to law, in the USA when the unit is transmitting with CCK modulation (fast pulsed short duty cycle) producing 1000 milliwatts or 1 watt of output at 2.4 GHz the highest gain antenna you can legally use is 6 dBi which produces an effective radiated power (reference to isotropic radiation pattern) of 4 watts, that’s the maximum power you can legally radiate which is higher than many other countries if not all. When the modulation uses OFDM producing 250 milliwatts of…

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