You need to read the manual for the extender. Some of them allow extending of already extended networks some are not.
A wireless range extender increases the range that your whan signal works There are several types of range extenders available so choose the one you need. I hope this helps.
You can purchase a wireless range extender at any electronic store like the source or radio shack. You can also check on line at electronic stores.
Range Extenders are used as part of a wireless network. When placed inside the range of the main wireless router, the extender will bounce the signal, without the need for any additional network wiring.
You can purchase so called wireless range extender, it does exactly what you need.
You can buy a wireless range extender in your nearest department store of best buys or staples. Or you can visit BJs or simply but it online for a cheaper price.
Many people share the internet with the neighbors, so one will purchase a Belkin Wireless G Universal Range Extender to accomplish that. The range extender helps people be able to catch a WiFi connection from far away.
Staples, Office Max and Wal-Mart all sell the Linksys Wireless G Range Expander WRE54G. Each of these retailers also sells this expander on their websites.
They will be roughly the same so try the Wireless PCI Card Network Range Extender Antenna.
It's wireless network booster or extender. It costs almost as much as a wireless router.
Several wireless router manufactures offer routers in the price range of $50 to $100. The best reviewed brands of wireless routers are Linksys, Belkin, and Netgear. If you are looking for a lower price you could try the Newegg.com website or perhaps EBay.
There are several different models of Linksys wireless routers over a range of prices from $30 - $100 depending on the speed of the router. An electronic retail store such as Best Buy would be able to help you determine which model will fit with your needs.
A wireless extender or more commonly a wireless range extender is a device that increases the range of the wireless network supplied by the wireless router or wireless access point (WAP). It is used by first configuring it to connect to the router/WAP's wireless signal and then it is placed in an appropriate area to help reach parts of the office or home environment in which the signal is too weak prior to deployment of said extender. The best place to set up a range extender is where the signal from the router/WAP is still fairly strong. Typically a signal that is still detected as three out of five bars is fine. Weaker than that and the quality of connection for the remote wireless workstation will not be of acceptable quality to provide decent service.To answer the other part of your question, you are correct. The extender does not need to be plugged into anything other than power. It works with the wireless network over the airwaves just like any wireless device would.If you have any other questions about wireless networking or networking in general, feel free to drop me a line.