About the ability of high power wireless adapter that has many versions and the chipset being used on. From the market with the Realtek RTL8187L to build on the brand name, such as Gsky, ALFA, or even WiFi4You own. Which improve the ability of the brand. Are based on the design. IC (PCB) to work with the Chipset performance, it will be different. So it's not surprising that even using the same chipset. However, the performance has to be very different. (Denis try a different performance of ALFA Gsky or improve race circuit. The performance varies by model).
Version that is compatible with the chipset using WiFi. Standard as N standard, it is also the name of Rallink. In fact, the Rallink chipset used in the device is WiFi everywhere I go. But the highlight will be the subject of the chipset to support the N standard has several versions. One popular version is the same version. RT2770F compatible b/g/n.
Back to the point that many people suspect. Chipset and asked me to apply for a transfer, the WiFi is far more important. For example. To get the problem of the distribution agreement, which is far more important. May be the major obstacle blocking it (the problem is WiFi. The main problem of the wave (Main. lobe) is moving in a straight line) with the result that the major problem at the middle-ware and reduce the intensity of foreign direct investment.
The destination device that will work well. Should be able to handle a major problem for the lower well. And should have sufficient returns to send information back to the major distribution contract (AP) understanding that the user may have only been the major destination. Actually, that is a two-way communication (Two way Communication) is both receive and send information back in time.
In order to test the performance of the RTL8187L chipset with RF2770T have not tested in conditions similar to those used in the long term (long. range) and the obstacles are as follows.
1.] The problem is the Linksys WRT54GL is a double pole HGA7T to DD-WRT. Firmware upgrade power = 250 mW by connecting with ADSL. Router ip defined as follows.
ADSL Router = 192.168.2.1.
WRT54GL = 192.168.2.254.
Internet use True internet speed 5Mbps.
2.] Been important to test the device.
The Realtek RTL8187L 1000mW ALFA NETWORK AWUS036H 1000mW b/g hipower usb adapter with antenna 5 dBi.
Brand from China Rallink RT2770F 1000mW a model CWUSB300NL 1000mW b/g/n with poles 6 dBi.
Notebook to test the MAC book white, bootcamp WinXp.
Note
This is clearly shown by comparison of different designers, Grade of a component as well as an emphasis on preventing the problems caused by the RF Shield metal frame protective cover for the RF Parts has the most important quality. Characteristics of the product, which is designed from ALFA Network skyrocketed Taiwan. Which is recognized around the world. In particular, both the U.S. and Europe.
3.] The place where the large and important contracts.
WRT54GL the floor in the corner of the building. Side wall (the wall that runs along a major contract to a receiver j) j's contract is placed on the roof with usb cable to put the car into Notebook.
4.] Distance and obstacles along the way.
Due to the need to connect to the internet, so it must be a place that is close to the point internet (ADSL) connection to the Internet by selecting the Office of the Company. And a test point to the biggest blind alley away from 165 meters (the elimination of) the orientation of the parent to the building about 5 houses or walls for at least 10 floors (to test the penetration of the major 1000mW.
The contract promised major role in the transmission of information to a distributed agreement problems. In contrast, the problem of the distribution will run through to the end to the problem. The lower level is very large contract to a major contract. To compare the level of problems that get) then ran through the trees along the way might open some way (which is close to the actual Stawa. The need for WiFi. Truewifi or hotspot with 3BB).
5.] The testing process.
- Try to connect the WiFi problem of WRT54GL.
- Monitoring the problem using netslumbler program.
- The ping test. The distribution of the problem. What's the problem.
- Test Speed Test.
- Run tests from CWUSB300NL (Rallink RT2770F) and change the ALFA 1000mW AWUS036H (Realtek RTL8187L).
You can view a screenshot of the test. Youtube Clip of the screen below. When viewed in a resolution to 720p (YouTubeHD) to see the numbers clearly (recommend using IE8) or if the picture is not clear, you can download clip original.
7.] Summary of test results.
Can be concluded as follows.
a.) Connection with both the AP. Can connect to the IP and Gateway are correct. Major contract with the Signal. Strength and Signal. quality of both the units are % (which is a comparison of the percentage of each device).
b.) Check the level of the problem of Netslumbler. The program has a major contract with the beacon transmitted by the broadcast signal. The difference is more than 10 dB have been measured at the level of the major problems is high Rx sensitivity due to better itself.
c.) There was a ping test ping to the IP address of the WRT54GL. (192.168.2.254) to test the transmission of data over wireless on a WRT54GL WRT54GL to get the information to send back. When the destination receives. To calculate the time of travel to the to the latency or ping time will tell whether it will have. At the same test. The lower and relatively constant. Indicates better performance of the data link (the ping time in a lot of equipment that can transmit data to a destination. Therefore a new transport Retransmit some cases too long a time out).
Noted.) Test speed test results are shown.
During a speed test values may be higher due to the ping time speed test with the ping packet receiving the information, it may take longer than normal. However, they should not be loose or hanging and often time out.
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| Speed Test is a test of CWUSB300NL (Rallink RT2770F) |
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| Speed Test is a test of AWUS036H (Realtek RTL8187L) |
If Clip is clear that considering the test results as shown above, the speed test on both occasions. There are differences in the. To take the time to test the speed test or continuous testing different. It refers to the ability to connect a large regular intervals shall not interrupt or disrupt is not fit to be ignored. By simply considering only the final test, but the same. It is a snap shot or slide.
Final to be significant. Before testing speed. test should close programs related to chaching before. Anti-virus due Kasrapy such a test would be a mistake, as you may have already seen the speed test is repeated at Speed. Intennet needle hit the speed we are using. It should be possible to test the speed of the faster speed internet we excessively use. - source
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