Netgear DG834G User Manual download pdf (Page 157)

Reference Manual for the 54 Mbps Wireless ADSL Firewall Router DG834G

Wireless Networking Basics D-7

202-10006-01

Note: Whatever keys you enter for an AP, you must also enter the same keys for the client adapter

in the same order. In other words, WEP key 1 on the AP must match WEP key 1 on the client

adapter, WEP key 2 on the AP must match WEP key 2 on the client adapter, etc.

Note: The AP and the client adapters can have different default WEP Keys as long as the keys are

in the same order. In other words, the AP can use WEP key 2 as its default key to transmit while a

client adapter can use WEP key 3 as its default key to transmit. The two devices will communicate

as long as the AP’s WEP key 2 is the same as the client’s WEP key 2 and the AP’s WEP key 3 is

the same as the client’s WEP key 3.

Wireless Channels

IEEE 802.11 wireless nodes communicate with each other using radio frequency signals in the

ISM (Industrial, Scientific, and Medical) band between 2.4 GHz and 2.5 GHz. Neighboring

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 are listed in Table 8-1:

Table 8-1. 802.11 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

1 2 ... 152 153 154 155 156 157 158 159 160 161 162 ... 165 166

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