Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: What reliable distance can be expected from this extender?
Document: Very easy to setup and thus far has been extremely reliable. The intitial setup is quite simple. Also very easy to maintain, edit, make changes through the web interface. Nice product.
Don't know why others have had problems. Could just be different levels of technical experience and placement in a high resistance area. I have two of these, and set them up in 1 minute. They work great. Very reliable signal and I have no problem with signal strength throughout the house.
My company owns several of these units. When configuring them it always feels like it's on a wing and a prayer. Often configs don't take and have to be reentered. One unit in our Philadelphia location has continued to loose it's configs and resets to defaults. Owned by Cisco but not as reliable as a true Cisco device.
The WAP54G works very well and is very reliable. I have it installed about 100 feet away from the router. The signal boost is amazing. However, no manual for installation. If you don't know much about routers and bridging it might become a nightmare. Check the internet for installation help or write down your routers basic information. Knowledge required. Other than that: great product.
If you need wireless access and don't need routing, then the WAP54G is a great answer. It installs in a snap, is very easy to configure (even wirelessly! ), and so-far is rock-solid reliable. It provides good security with WEP/WPA and SSID can be disabled. The antennas are replaceable so you can get a pair of high-gain antennas and get a little more signal for very little scratch.
I have 3 of these, 2 are used for a bridge and the other is used as an AP. The bridge is between 2 buildings with some trees in between and about 500' apart. My connection is setup with WEP and I have a reliable connection that runs about 15 mbps. After installing a pair of HGA7T's (7db ant.) my rates now run at 24 mbps. The AP has 4 clients and has been great. The flexibility and performance of this unit is great for the money.
I bought this to provide access from my 3rd floor to a WRT54G router that moved from our 2nd floor to 1st floor when we switched from DSL to Comcast cable. Installation took a little longer than I expected, but total was less than an hour to get it all set up.Once installed, there have been no problems at all. Like all Linksys products I've used, it just keeps working perfectly.
The entire process took less than an hour (much easier than expected), most of that time spent carefully reading the manual or on-screen instructions in the Setup Wizard and testing the settings.There were a couple of small surprises. For example, after I initially connected to the WAP54G as described in the second paragraph above (no security, etc), the netbook obviously no longer connected after security was added and I could not figure out how to get out of the original wireless connection.
I have a Linksys WRT54GS Wireless Router in the kitchen located on the main floor between the basement and the upstairs bedrooms. My old laptop PC accesses this router from anywhere in the house using 802.11b while the PC in the bedroom connects via 802.11g using the WAP54G Access Point.I'm not sure what my wireless data rates are but as expected, big file downloads from the internet using the bedroom PC via 802.11g are significantly faster than the 802.11b downloads on the laptop.
(Note: Amazon has deleted certain key info from my review. Since they don't edit comments, read the comment below for the missing info. )After reading through many reviews here, and struggling all day to get this unit running as range extender/repeater, it looks like the negative reviews are mostly from people trying to use it as a repeater. Apparently, if you're just using it as a wireless router, it seems to work fine.
Answer: I've used this AP in two different setups. An open warehouse and in my apartment.In the warehouse I could connect reliably at 40 yards. In my apartment I can connect reliably up to 15 feet with only one wall in between my devices and the AP. Any further or any additional walls create an unreliable connection. I should also note that in my building, every channel has at least 1 other wireless network broadcasting on it.Not great in an apartment setup. Excellent in open and less congested spaces.