Question about NetGear CG814M Wireless Cable Modem Gateway Router
Improving Wireless Range
Posted by Anonymous on
HOW DO I CONNECT MY NETGEAR WIRELESS ROUTER
Posted on Feb 24, 2009
This problem is widespread and posted solutions are not getting to the root of it. Yes rebooting the router works - tilll it happens again. No its not about signal strength etc. Its about how the router handles traffic. complex heavy data flows seem to be a trigger as do certain websites. ( I avoid BBC, google maps etc). No manufacturer wants to address it and no post has given any idea how to preventit.
Posted on Sep 08, 2008
Wireless and Antenna Terms Wireless routers, access points, and adapters send and receive radio wave signals through antennas. The antenna is hidden inside adapters, but on routers and access points there's a visible antenna. Radio waves can be focussed like a lightbulb. And like a light, some materials reduce or stop radio waves. While light focused from several lights is brighter and makes it easier to see, several antennas in the same area cause interference ? the radio signals will be muddy and confused. Your goals in optimizing power are: * Avoid obstacles. * Avoid interference. * Increase signal strength. Power affects how far an antenna radiates. * Use the equipment in places it's most powerful and most sensitive. Antennas don't radiate equally in every direction. Just as the base of a lightbulb blocks light, and just as a light can be focussed by a reflector, so an antenna signal may be blocked and focused. Since people cannot see radio waves, you'll rely on testing and trial-and-error to get an idea of where antennas "shine" most brightly. An adapter's antenna is important, but the most powerful and sensitive antennas are on routers, access points, and detachable external antennas. The focus of an antenna is either omni-directional antenna or directional. "Omnis" are used in most home products, they radiate horizontally all around, but are weaker upward or downward. When visible, these antennas are usually a rod a few inches long. A directional antenna radiates strongly in a limited direction. It is a flat panel or a dish. These are used for point-to-point transmissions (where two antennas are focused directly at each another). These need a line of sight between them, and preferably a large open space around the main beam. When you are near antennas you'll still get a signal, even if you are out of the direction of its strongest signals. But when further away, you have to be in the direction the beam is the most powerful and unobstructed to receive it. One final concept before you go to the above links is interference. Interference is a signal ? one you don't want ? at the same frequency as the one you're using. Interference comes from devices such as microwave ovens, cell phones, 2.4 GHz cordless phones, and copy machines. Interference is also caused when your own wireless signals are bounced off reflecting objects. Objects may partly or completely absorb signals, reflect them, bend them, or let them pass right through. Metal and water (including the water in people!) absorb or reflect signals. Air, wood, and glass tend to let signals pass with weakening. And when outdoors, plants and the weather may cause interference.
Posted on Feb 19, 2006
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Using the best channels has a big effect on network performance. Your goal is to choose settings that avoid interference from other networking and radio frequency equipment. (If you have 802.11a or 802.11a/g, channel selection is less important, skip to "Reducing Wireless Network Traffic".)
To see all your options start with: Improving Wireless Range: Overview
If you have a simple home network, and aren't close to neighbors with wireless equipment, you may be lucky enough just to choose between many channels that work well.
Complications arise when:
Simple Spacing of Channels
As explained in Improving Wireless Range: Overview, improving signal strength is not like adding more lights to get a brighter livingroom. Devices that transmit powerfully - such as routers, access points, and cell phone base stations - confuse one another. It's necessary to distance them and to have them use different channels.
For 802.11b and 802.11g, there are 11 channels for wireless equipment (13 channels in Europe). In the simple situation where there's little interference, you can choose any channel that works for you. When there is interference from wireless networks that overlap with one another, each network should use one of the non-overlapping channels: 1, 6, or 11 (1, 7, 13 in Europe). Then, 3 networks can use the same space with minimum interference. If you can't do that, choose channels as widely spaces as possible.
You can use a combination of access points and antennas and other equipment to create local "spotlights" of strong transmission, rather than trying to cover everywhere.
What If a Channel I Want to Use Has Too Much Noise (Interference)?
If your neighbor has a wireless network, it wouldn't be surprising that they are already using channel 1 and channel 11. Unfortunately, you can't completely avoid interference just by using other channels. Wireless protocols 802.11b and 11g only have 3 non-overlapping channels. Therefore when 4 or more channels are used in the same area, the level of interference can increase notably. If you and your close neighbor both have a router and a wireless access point, for example - which makes a total of four powerful transmitters - both of you will have a certain amount of interference.
If there's a severe problem, a practical and sociable thing is to talk to your neighbors using wireless networks that can be seen when you scan. Together, you can choose optimal channels for your respective networks. You'll want your own channels at least 5 apart. So, for example, you could use channels 1 and 8, and your neighbor could use 5 and 11.
You may be able to place routers and access points further away inside your homes. After all, the kinds of physical barriers that reduce your transmission range also reduce the signal that your neighbor doesn't want to see.
Super G technology is faster, but it uses two, non-configurable channels. Therefore it may not be possible to pick other channels that avoid its interference.
If you can use a directional antenna, or an antenna cable to shift an antenna, that can help you both. See the articles on antenna selection.
Reducing Wireless Network Traffic
When there's noise, your network performance drops, so one approach is not to stop the noise, but to reduce the amount of network data being transmitted.
In a noisy environment, it may be useful to keep part of your network wired. If Ethernet cabling isn't an option, consider NETGEAR's Powerline products - using existing home wiring instead of cables.
When SSID Broadcast is turned on, it's easiest for equipment to find the strongest signal. However this also causes network overhead. When the SSID is broadcast, your neighbor's equipment may keep a record of it, and automatically try to connect several times a second; this can cause significant performance reduction. So where there are close networks, turn off SSID Broadcast, and change the default SSID.
Turning off WEP and WPA may increase network throughput, but exposes your network to hackers. This is not recommended, except for testing purposes.
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