How far does a Wi-Fi signal reach?

Answer

Most routers provide Wi-Fi coverage for about 100 feet in all directions, according to How Stuff Works. Range extenders or repeaters can be used to expand this distance.

The signal strength will always be highest in the room where the router is located. The signal gets weaker the more doors, walls or even appliances it has to pass through. Wi-Fi that has to compete with many other Wi-Fi signals will also be weaker in signal strength. This occurs in locations like apartment buildings.

It is worth noting that the signal from a wireless router must compete with other household electronics that also operate on the same radio frequencies. These devices include Bluetooth headsets, cordless phones and microwave ovens.

Q&A Related to "How far does a Wi-Fi signal reach?"
The furthest wifi on record without any amplifiers is 124.9
http://www.chacha.com/question/how-far-does-a-wifi...
around the 30 foot range or less for best performance so yes, it'll definitely will reach at 20 feet. although i really do not recommend a wireless connection because it is slower
http://answers.yahoo.com/question/index?qid=200909...
OPTION 1: Mangala Ldweep Exp (2617) Ernakulam Jn (ERS) to Kalyan Jn (KYN) 1583 km. Dep ERS 13:00 hrs; Arr KYN 13:45 hrs (next day) OPTION 2: Netravathi Exp (6346) ERS to LokmanyaTilak
http://wiki.answers.com/Q/How_far_is_cochin_from_B...
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wceddk40/html/cxgrfNDISLibraryFunctions.asp http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wceddk40
http://www.experts-exchange.com/Software/OS/Micros...
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