NETGEAR WAG302 manual Table B-2 802.11b/g Radio Frequency Channels

Reference Manual for the NETGEAR ProSafe Dual Band Wireless Access Point WAG302

channels are 5 MHz apart. However, due to spread spectrum effect of the signals, a node sending signals using a particular channel will utilize frequency spectrum 12.5 MHz above and below the center channel frequency. As a result, two separate wireless networks using neighboring channels (for example, channel 1 and channel 2) in the same general vicinity will interfere with each other. Applying two channels that allow the maximum channel separation will decrease the amount of channel cross-talk, and provide a noticeable performance increase over networks with minimal channel separation.

The radio frequency channels used in 802.11b/g networks are listed in Table B-2:

Table B-2:	802.11b/g Radio Frequency Channels
Channel		Center Frequency	Frequency Spread
1		2412 MHz	2399.5 MHz - 2424.5 MHz
2		2417 MHz	2404.5 MHz - 2429.5 MHz
3		2422 MHz	2409.5 MHz - 2434.5 MHz
4		2427 MHz	2414.5 MHz - 2439.5 MHz
5		2432 MHz	2419.5 MHz - 2444.5 MHz
6		2437 MHz	2424.5 MHz - 2449.5 MHz
7		2442 MHz	2429.5 MHz - 2454.5 MHz
8		2447 MHz	2434.5 MHz - 2459.5 MHz
9		2452 MHz	2439.5 MHz - 2464.5 MHz
10		2457 MHz	2444.5 MHz - 2469.5 MHz
11		2462 MHz	2449.5 MHz - 2474.5 MHz
12		2467 MHz	2454.5 MHz - 2479.5 MHz
13		2472 MHz	2459.5 MHz - 2484.5 MHz

Note: The available channels supported by the wireless products in various countries are different. For example, Channels 1 to 11 are supported in the U.S. and Canada, and Channels 1 to 13 are supported in Europe and Australia.

The preferred channel separation between the channels in neighboring wireless networks is 25 MHz (5 channels). This means that you can apply up to three different channels within your wireless network. There are only 11 usable wireless channels in the United States. It is recommended that you start using channel 1 and grow to use channel 6, and 11 when necessary, as these three channels do not overlap.

B-8 Wireless Networking Basics

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