I was using the wifi off my dsl modem (speedtouch 585) located in the basement of my house. It was 802.11g and I usually got 1 bar on the second floor and couldn't get reception outside my house. The same signal strength for any wifi device I ever attached but the signal never dropped and the speed was ok. The iPad had the same connection strength and distance issues - inside the house ok, step outside no go.
I finally decided to get an N modem (dlink dir-655) and put on my main floor as an access point. Huge difference. Full strength anywhere in the house and I can go in my back yard and have wifi access and very fast downloads. Definitely impressed with the speed difference and strength over g and with no drops with my iPad.
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