The 2.4GHz ISM Band.

Wireless networking systems using the 802.11b standard operate in the 2.4GHz ISM band. Other services, including microwave ovens, medical equipment, and cordless phones also operate in the ISM band.

Channel ID

US/Canada

Europe

France

Spain

Japan

1

2412

2412

-

-

2412

2

2417

2417

-

-

2417

3

2422

2422

-

-

2422

4

2427

2427

-

-

2427

5

2432

2432

-

-

2432

6

2437

2437

-

-

2437

7

2442

2442

-

-

2442

8

2447

2447

-

-

2447

9

2452

2452

-

-

2452

10

2457

2457

2457

2457

2457

11

2462

2462

2462

2462

2462

12

-

2467

2467

-

2467

13

-

2472

2472

-

2472

14

-

-

-

-

2484

A WLAN receiver can use any of these channels, and can automatically hop from channel to channel if interference is encountered. An 802.11b antenna for the US and Canada should radiate well between 2410 and 2460 MHz.