Wireless WIFI WI-FI BOOSTER ANTENNA ETHERNET LAN CARD AP SMA SMA AP D-link DWL520, Linksys WMP11, WET11, Netgear MA311, or D-link Aps, 2400-2483 MHz Review

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(More customer reviews)I purchised this item to hook up to an external wifi adaptor for my laptop, so that I would have more range than the antenna that came with it. Even after hooking it up outside, I got less range than the antenna that came with the adaptor. For a few extra cents, you can get an antenna that comes with a 9 dBi antenna, and is interchangeable, which this one is not!

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5 X Range Extender - Extends up to 5 times the original range of your WiFi access in open space. Plug and Play - No extra pigtails needed. Comes with 6 feet pigtail with Reverse Polarity SMA termination. Plug directly into your D-link DWL520, Linksys WMP11, WET11, Netgear MA311, or D-link APs (anything that uses Reverse Polarity SMA). Manufactured in ISO-9001 compliant facilities. Fully tested with HP RF network analyser Frequency: 2400-2483 MHz..Gain: 3 dBi..Impedance: 50 Ohm..VSWR < 1.5 Average...Maximum Input Power 50 W..Antenna Length 9 inch Directionality Omni..Polarization Vertical..Weight: 1.8 oz..Pigtail Length: 6 ft (72 in, 183 cm)..Pigtail Connector Reverse Polarity SMA..No Extra Pigtails Needed!

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Alfa 1000mw 1W Waterproof Marine high power Long Range Outdoor 802.11 G USB CPE wireless network Wifi Adaptor with Integrated 12dBi 2.4GHz Antenna - Great For Trucker or RV Review

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(More customer reviews)Synopsis of Brief Ownership:
* Package arrived on time and well packed by DBRoth.
* Supplied CD did not install the 8187 Realtek driver. Had to plug in the adapter and let Win XP find it to install the driver. Procedure had to be used on 2 different computers.
* This is a B/G unit only and does not incorporate N like Alfa's B/G/N unit. I've been informed that particular unit (-nt5) does not perform as well. Perhaps having to deal with 3 different protocols, something was given up. Also, the -nt5 model is really not a 2000mw device since 1000mw is the FCC legal limit. The -nt5 model allows momentary bursts of energy, but not for continuous connection. I'll leave that to the RF or Realtek experts to comment on.
* Placed unit both inside and outside of both first and second story windows. The unit easily doubled to tripled the available APs.
* Marginal signals, 1 to 2 bars, jumped to the max of 5 bars.
* The great signal quality may be attributable to no antenna cable attenuation loss since both the adapter and antenna are internally embedded along with power supplied by dual USB connections.
* For outdoor use, the user will have to seal against the elements better than the Alfa design. While adequate, the USB connection is susceptible to the effects of the elements. In a marine environment, I recommend sealing the interior USB connection with liquid electrical tape or a corrosion inhibitor and sealing the access panel with silicone or sail tape to prevent water intrusion.
* Caveat: The user must keep in mind that while this unit dramatically improves the ability to reach out and touch, it is also important to know that the other end must be able to handshake as well which impacts ability to retain a solid connection.
So far, so good.
[...]

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UBDo-gt is the long-range wireless 802.11b/g outdoor USB CPE with 5M usb cable. UBDo-gtprovides users to launch IEEE 802.11g wireless network at 54 Mbps in the 2.4GHz frequency, which is alsocompatible with IEEE 802.11b wireless devices at 11Mbps. You can easy to install and enjoy the internetconnection by just simply plug USB into the Notebook and Desktop. UBDo-gt also includes a convenient Utilityfor scanning available networks and saving preferred networks that users usually connected with. Securityencryption can also be configured by this utility.* standards: IEEE 802.11b/g USB v1.0/1.1/2.0* USB cable Length: 5M (16.4 Foot)* Data Rate: IEEE 802.11g 54Mbps, IEEE 802.11b 11Mbps* Output Power: 30dBm* Receiver Sensitivity: IEEE 802.11g -76dBm @ 54Mbps - IEEE 802.11b -92dBm @ 11Mbps* Antenna: 12dBi high-quality 2.4GHz panel antenna* Frequency Range: US, Canada 2.412GHz~2.462GHz (CH1~CH11), EU 2.412GHz~2.472GHz(CH1~CH13)* Security: 64/128-bit WEP Encryption, WPA, WPA2, TKIP, AES* Support OS: Windows XP / 2000 / Vista, Windows 7, Linux, Mac* Operating Voltage: DC 5V ± 5%

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Cisco-Linksys High Gain Antenna Kit for TNC Connectors HGA7T Review

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(More customer reviews)Folks, these antennas, as well as the stock antennas, have an omnidirectional (same in all directions) horizontal radiation pattern. This means that, when installed in a suitable location, the most significant reception gains will be seen with equipment that is on the same level as the router itself. Most of the "these did nothing for me" stories appear to be from people who have the router downstairs and the equipment upstairs, or in the basement. These antennas are NOT designed to improve reception between floors in a home.
2.4GHz signals are heavily attenuated by walls, foil-clad insualtion, and other building materials. Interference can also be present from cordless phones, microwaves, wireless cameras and other gear in this band -- adding an antenna can make these types of issues WORSE. Changing the channel your wireless router uses can help, since chances are most of your neighbors are using the same channel you are. Some routers have a built-in site survey utility to help you locate an unused channel.
If you are having trouble reaching a particular device through several walls, or between floors, try a directional antenna as these will concentrate the radio energy where they are pointed. Some reviewers have pointed to a site that illustrates how to make a directional antenna with index cards, glue and foil -- this is a rudementary directional antenna but will surprisingly provide excellent results in many applications.
In summary: If you purchased these antennas and they did not work or made the problem worse, you need to reconsider the type of installation (multi-floor, multi-wall, etc.), sources of interference, channel selection, blocking materials such as foil-clad insulation, as well as proper antenna selection.

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Linksys High Gain Antenna Kit for TNC Connectors - Increase the range of your Wireless network!Attach these high gain antennas to your Linksys Wireless Broadband Router or Access Point, and increase both the effective strength of the outgoing signals, and the receive sensitivity for incoming signals.The added signal strength and sensitivity also improves close-range communication reliability because every packet comes through "loud and clear", reducing retransmissions due to weak signal reception errors.To install, just unscrew your current antennas, and attach the High Gain antennas in their place.There are no drivers to install, and no modifications to your setup are necessary.The Linksys High Gain Antenna Kit saves wiring costs and helps to build corporate wireless infrastructure by driving stronger signals into distant corners and hard-to-reach areas.And it's perfect for covering large areas in warehouse environments, public spaces, wireless hotspots, and outdoor venues -- anywhere you need extra coverage for your wireless network.

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Hawking HiGain Directional Corner Antenna, indoor, 15dBi - HAI15SC Review

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(More customer reviews)This is a "deconstructive" review of Hawking's corner reflector. Basically I took it apart so you don't have to! BTW - I am an RF engineer, so I apologize if it gets too technical.
First let me provide a explanation of what a "corner reflector antenna" is. A corner reflector antenna is a very simple, but high gain type of antenna. It consists of a dipole antenna (a dipole is just a straight piece of wire cut in a precise way) and behind the dipole is an angled metal screen or plate which is called the reflector. The angle of the reflector is typically 90 degrees, which forms a corner and thus the name. The reflector focuses the signal so it is more concentrated, which results in higher gain versus a simple dipole.
Taking apart the corner reflector is straightforward, but it does take some time and muscle. I carefully but forcefully pulled on the gray plastic end caps. After some time, the end caps finally came off. This revealed an unlabeled, rather ordinary black "stick" antenna inside the white plastic pipe. It's probably a 5dBi collinear dipole. The antenna is connected to the coax cable via a panel mount SMA connector. I was able to remove this antenna, but it does take some torque because Hawking applied thread locking glue.
Based on it's construction, I have no reason to doubt the 15dbi gain claim. However, I seriously doubt the 90 degree vertical and horizontal beamwidths that the manual seems to claim. I guesstimate that 3dB beamwidths are in the order of 40 degrees horizontal and 30 degrees vertical, based on my experience with similar corner reflectors. This makes orientation MUCH more critical. If you are 15-20 degrees off, you could be losing half (3dB) of your signal! On the other hand, such a narrow beamwidth is a good thing if other people's AP's/client's are interfering. Any other transmitters outside of the main beam will be weakened, reducing your noise and improving signal quality.
Now to analyze the coax cable. The outer jacket is unlabeled white plastic, so you can't tell who made it or what type of cable it is. It's thin, about 1/8" thick . I cut off one end to see what's inside. The shielding is quite good. It's a dual shield, foil plus braid. The foil provides complete coverage. The braid is tin plated copper and has excellent coverage, probably 95%. The center conductor looks and cuts like pure solid copper, not copper clad steel. The center insulator (the dielectric) is a clear translucent, solid (not foam) plastic. When I soldered on an SMA pin, the dielectric easily melted! It's probably NOT teflon, but cheaper, higher loss polyethylene. Based on this, it's probably a RG-174 type cable, not the lower loss RG-316. Cables of this type generally have a loss of 0.6dB per foot at 2.4Ghz. The cable is 6 feet long , so you lose more than half (3.6dB) of your signal in the coax! Making a shorter cable and/or using better cable would help.
Considering how it's made, a lot of the negative reviews make sense. It's a 15dBi antenna, but you lose 3.6dBi in the cable so effectively it's only 11.4dBi. Plus if you don't point it within 15 to 20 degrees of your target (both horizontally AND vertically), you will lose even more signal. Used indoors, there is so much RF scatter that the actual direction of maximum signal can very often NOT be in the direction of the target due to signals being bounced around. You'll have to rotate the antenna in different directions vertically and horizontally to find the maximum signal. Used outdoors or in unobstructed area, just point it at the target and you're done. However, keep in mind that this IS NOT a weatherproof antenna, so don't leave out outside where the rain and sun will beat down on it.
Used properly, this antenna really shines. It provides a tremendous value for under $50. Antennas with similar gain will cost MUCH more.

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Increase Your Wireless Network Strength, Works with 2.4GHz 802.11b /g Wireless Standards, Extend your Network Range, Great for Large Conference Rooms or Open Spaces, East Installation (No Software Required).Main FeaturesManufacturer: Hawking Technologies, IncManufacturer Part Number: HAI15SCManufacturer Website Address: www.hawkingtech Product Type: High-Gain AntennaFrequency: 2.4 GHzGain: 15 dBiImpedance: 50 ohm NominalConnectors: 1 x Reverse SMAStandard Warranty: 1 Year(s)

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Wireless Routers Extend Range Antenna For Linksys DLink Review

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(More customer reviews)I thought that I could just screw this onto the back of Linksys wireless router(replacing the antenna).
This antenna has some sort of base(and it can't be removed from it, like it can't be unscrewed). . .i think it's for a wireless card, not a router.
I repeat! This is NOT the item in the picture.

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New Wireless Routers Extend Range Antenna SMA 5DBI For Linksys DLink PCI Cards & any RP-SMA RouterIf you are looking for a low profile, high performance antenna for enhanced performance on your LAN or just wish to enhance your signal quality over your existing antenna, consider our Omni Directional RUBBER DUCK 5.5 dBi Antenna. It can be used in a variety of applications from wireless internet, to LAN / WAN bridges, or using it in a mobile application where you need a directional antenna to pick up a distant signalHigh Performance 5.5 Dbi Omni Directional Wireless Lan Access Point Antenna for Linksys, DLink, Netgear, US Robotics, Belkin, Cisco, GRE, Hyperlink, MaaxTech, Proxim, Raylink, Siemens, SMC, Waveaccess, WiLan and Zoom.D-Link: DI-514, DI-524, DI-614, DI-624, DI-713, DI-714, DI-714Plus, DI-824VUP, DWL-1000AP Plus, DWL-2100AP, DWL-520. DWL-800AP Plus, DWL-810 Plus, DWL-900AP, DWL-G510, DWL-G520, DWL-G700AP, DWL-G800AP, DWL-G810, PCI 520 Plus3Com: 3CRWE820096A, 3CRWE870075A, 3CRWE91096A, 3CRWE825075A, 3CRWE875075A, 3CRWE725075ALinksys: WET54G, WET54GS, WMP54G, WMP54GS, WET11, WPS, WRV54G, WMP11 PCI CardNetger: FM114P, FVM318, FWG114P, MA311, ME101, ME103, WG302, WG311, WG311TTRENDnet: TEW-203PI, TEW-228PI, TEW-403PI, TEW-423PI, TEW-223PI, TEW-303PI PCI, TEW-231BRP, TEW-431BRP, TEW-2K1, TEW-435BRMU.S.Robotics: USR2216, USR5416, USR5430, USR5450, USR8022, USR8054, USR9106ORiNOCO - Proxim: RL/2 BridgeBelkin: F5D6001, F5D7000, F5D7001Breezecom: AP/SA/WB-10DIntel: PRO/Wireless AP WPCI5000Hewlett Parkard: 420WL access PointMotorola: WR850G wireless Router, WA840G, WPCI810GHawking: HWR54G, HWBA54G, HWP54GNote: This antenna will only work with WiFi cards that have an external RP-SMA antenna connector. It will not work with desktop PCs that have a USB WiFi device, laptops that have built-in integrated WiFi, or devices that require an RP-TNC connector.

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D-Link ANT24-0700 2.4 GHz Omni-Directional 7 dBi Indoor Antenna Review

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(More customer reviews)My wireless router is in my office in the basement. When I took my laptop to the first floor the signal strength was "Very Good" or "Good". When I first installed this antenna, it didn't make a difference and I was going to write it off, but I went through the instruction manual. The key to making this antenna work is the way you position it. For example if you keep the antenna vertical as you see in the picture on amazon, it transmits the signal in a horizontal circle. Like a dinner plate set on the dining table. If you are trying to send the signal to other rooms on the same level, this helps. However, it doesnt help if you are trying to send boost the signal to a level above or below the route. You need to position the antenna horizontally, (i.e, parallel to the floor) to send the signal in a vertical circle. My signal strength is now excellent to very good on the first floor and very good to good on the second level with the router in the basement. Hope this helps.

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The D-Link ANT24-0700 is a 7dBi High-Gain Omni-Directional Antenna designed to provide 360 of enhanced wireless signal coverage. For greater flexibility in placement, the ANT24-0700 is accompanied by a magnetic based with 1.5m extension cable. For any 2.4GHz wireless networking device with a SMA or TNC connector, the ANT24-0700 is the ideal solution to help increase wireless reception. Place the antenna in a prime location where maximum signal coverage can be attained.

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eForCity Wi-Fi Booster Antenna for D-link DWL520, Linksys WMP11, WET11, Netgear MA311, or D-link Aps, 2400-2483 MHz, 6ft Review

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(More customer reviews)At first, I wasn't sure if I liked this little antenna or not. There isn't much to it... it's got a connector, a cord, a magnetic base (which is pretty strong by the way) and of course the antenna itself. It didn't seem to give me much of an improvement until I learned how to pick the correct location for it...
The biggest benefit of having one of these is flexibility of placement. With antennas, correct placement is crucial. I bought two: one for my desktop PC and one for my router. These antennas aren't necessarily any more sensitive than the little plastic ones that come with wifi cards and access points, but being able to move the antenna location from behind the PC on the floor (which is where most people with wireless cards have their antennas) to the top of your desk or on top of your monitor makes a big difference right away.
Now, if you are really serious about getting the best performance out of this antenna, I would suggest you download a program called NetStumbler. It will let you see the S/N ratio in dBm and it updates in real-time. This lets you get perfect placement with your antenna. You'd be amazed what a difference an inch to the left or right can make. I have a feeling a lot of people who have problems with aftermarket wifi antennas are not placing them properly.
For $5.54 each plus a couple bucks for shipping, this antenna can't be beat.

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5 X Range Extender-Extends up to 5 times the original range of your WiFi access in open space. Magnetic Mount-Put the antenna near the window or on top of a vehicle where it can pick up more signals. Plug and Play-No extra pigtails needed. Comes with 6 feet pigtail with Reverse Polarity SMA termination.

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