Sony ICD VGN-UX200 - Manual (Page 47)

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Using Your VAIO Computer
The communication range varies depending on the actual distance between communication devices, existence of obstacles between such devices, the
radio conditions, the ambient environment that includes existence of walls and materials of such walls, and the software in use.
Deploying IEEE 802.11b and IEEE 802.11g products on the same wireless network may reduce the communication speed due to radio interference.
Taking this into consideration, the IEEE 802.11g products are designed to reduce the communication speed to ensure communications with
IEEE 802.11b products.
When the communication speed is not as fast as expected, changing the wireless channel on the access point may increase the communication speed.