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

202-10078-01

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NETGEAR WAG302 manual Table B-2 802.11b/g Radio Frequency Channels, Channel Center Frequency Frequency Spread