Don't know if I posted this before, but here it is.
T-Mobile TM-G5240Wireless Router User Manual
Technical specifications
Wireless Operating Range
Indoor – Up to 300 feet
Outdoor – Up to 2000 feet
The TM-G5240 lets you access your network, using a wireless connection, from virtually anywhere within its operating range. Keep in mind, however, that the number, thickness and location of walls, ceilings, or other objects that the wireless signals must pass through, may limit the range. Typical ranges vary depending on the types of materials and background RF (radio frequency) noise in your home or business. The key to maximizing wireless range is to follow these basic guidelines:• Each wall or ceiling can reduce your TM-G5240's range from 3-90 feet (1-30meters). Position the TM-G5240 so that the number of walls or ceilings is minimized.• Be aware of the direct line between network devices. A wall that is 1.5 feet thick(.5 meters), at a 45-degree angle appears to be almost 3 feet (1 meter) thick. At a 2-degree angle it looks over 42 feet (14 meters) thick! Position devices so that the signal will travel straight through a wall or ceiling (instead of at an angle) for better reception.• Building materials can impede the wireless signal - a solid metal door or aluminumstuds may have a negative effect on range. Try to position wireless devices and computers with wireless adapters so that the signal passes through drywall or open doorways and not other materials.• Keep your product away (at least 3-6 feet or 1-2 meters) from electrical devices or appliances that generate extreme radio frequency noise (example, microwave).
From the phone used with Tmobile SGH-t409 series.
Wi-Fi enabled devices (laptops and PDAs as well as UMA phones) can send and receive data wirelessly from any location equipped with Wi-Fi access. This is accomplished using wireless routers, installed within a Wi-Fi location. A wireless router transmits an RF signal to Wi-Fi enabled devices that are within range of the router. Depending on the particular router, its range is usually about 300 feet. The speed of the transmission is governed by the speed of the pipeline fed into the wireless router.
What This Means to You
When you are not in range of a Wi-Fi connection, your normal cellular network takes over and keeps you connected. Your phone switches automatically from Wi-Fi to cellular whenever it's necessary to maintain your connection, whether your phone is in Idle mode or in the middle of an active call. The switching process is virtually unnoticeable.
So where's all the talk about signal strength? There isn't any.
