Netgear WAG311 Manual Do Utilizador

B-8

Wireless Networking Basics

The radio frequency channels used in 802.11b/g networks are listed in 

:

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.

IEEE 802.11a utilizes 300 MHz of bandwidth in the 5 GHz Unlicensed National Information 
Infrastructure (U-NII) band. Though the lower 200 MHz is physically contiguous, the FCC has 
divided the total 300 MHz into three distinct domains, each with a different legal maximum power 
output. Below is a table of summary for different regulatory domains.

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