Home WiFi Support

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Learn the Home WiFi basics

The easiest way to connect multiple computers to the Internet is with a Time Warner Cable Internet cable modem with built-in wireless router.

You can connect up to four computers to your modem (the actual number can vary by location).

Under normal usage, the speed of your Internet connection should not be affected. However, if one computer is being used for something that requires a large amount of dedicated continuous bandwidth, like streaming video or large graphics transfer, you may notice slower speeds.

Time Warner Cable’s speed claims are for computers that are connected via an Ethernet cable. According to an article on PCWorld.com, a study by a broadband analysis firm in England showed that customers lose an average of 30 percent of their broadband data speed when connected via WiFi versus connected via hard wire.

Several factors contribute to interference, and there are some things you can do to reduce the impact.

  • Too many WiFi networks near each other. Most WiFi equipment operates on the same, crowded 2.4GHz band. If you live in a neighborhood or apartment building, chances are those WiFi networks are interfering with each other. You can buy a dual-band router that operates simultaneously at 2.4GHz and 5GHz. Arris DG1670A and Arris TG1672G modems are the dual-band routers that are available for lease from TWC.

  • Household electronics. Wireless routers use the same frequencies used by many cordless phones, microwaves, baby monitors and other wireless devices. All this interference can sometimes translate into Internet speeds that are slower than you are used to with Time Warner Cable Internet. If you’re in the market for a new cordless phone or baby monitor, check the frequency information and avoid 2.4GHz and 5GHz options. Keep your router and your device away from the microwave oven. 

  • Outdated firmware. Keep your router’s firmware up-to-date if you own your own modem. With older devices, you'll have to access the router's administrative interface -- typically through a Web browser -- to check for updates. If you lease your modem from TWC, we upgrade the firmware for you.

  • Security. Make sure you turn on your network’s security and change the original password. When you enable WEP (Wired Equivalent Privacy) and set a password, you keep others from the outside using your network and slowing your own WiFi experience.

  • Power. According to Apple’s online support, some external electrical sources such as power lines, electrical railroad tracks, and power stations can cause WiFi interference.

  • Household structure. WiFi is all about radio waves. Put your router in the center of the home, if possible, for greatest range. Keep the router away from cordless phone stations. Place the router on a desk, not on the floor, and keep it away from large metal or concrete objects. Here’s a chart showing structural materials and how much they contribute to interference:

Interference Potencial
Wood Low
Plaster Low
Synthetic material Low
Tinted glass Low/Medium
Water Medium
Bricks Medium
Marble Medium
Cordless Phone (2.4GHz) Medium/High
Concrete High
Microwave Medium/High (up to 15 feet)
Metal Very High


External resources:

  • PCWorld - Six Things That Block Your Wi-Fi, and How to Fix Them

  • Apple support

  • HowToGeek.com - How To Get a Better Wireless Signal and Reduce Wireless Network Interference 

  • Network World - Coping with Wi-Fi's biggest problem: interference

If your WiFi is not connecting, please try each recommendation below:

  • Ensure the wireless connection on your laptop/PC is turned on.
  • Check all connections on your computer and cable modem. You may find that a cord has become loose or has been pulled out.
  • Reboot your cable modem and wireless router. If there has been a cable problem in your area, it may be necessary to reboot the modem in order to re-establish a proper connection.
  • Make sure you are within range of your wireless router.
  • Reboot your computer. This fixes a surprising amount of problems, especially those that have cropped up unexpectedly, or with no apparent cause.
  • Check your cable TV (if applicable). If your TV is experiencing problems, your TWC Internet services are most likely affected as well.

If the above recommendations are unsuccessful, contact us.

All of your computers need to be equipped with wireless network cards, which are usually built in. For older computers without these cards, you can buy an external adapter that can plug into a port on the outside of your computer.

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