A.1 Wireless LAN channels
A.1.1 IEEE 802.11b/g
The IEEE 802.11b/g standard for wireless LAN allocated the 2.4 GHz frequency band into 14 overlapping operating channels. Each channel corresponds to a different set of frequencies. The table below shows the center frequencies of each channel.
| Channel | Center | Channel | Center | |
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| 1 |
| 2.412 GHz | 8 | 2.447 GHz |
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| 2 |
| 2.417 GHz | 9 | 2.452 GHz |
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| 3 |
| 2.422 GHz | 10 | 2.457 GHz |
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| 4 |
| 2.427 GHz | 11 | 2.462 GHz |
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| 5 |
| 2.432 GHz | 12 | 2.467 GHz |
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| 6 |
| 2.437 GHz | 13 | 2.472 GHz |
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| 7 |
| 2.442 GHz | 14 | 2.484 GHz |
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If several
The number of channels available for the wireless LAN adapter (in IEEE 802.11b/g) mode varies by country/region. Refer to the table below to determine the number of channels available in your location.
| Country/Region (Regulating Body) | Available Channels |
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| Australia (ACA) | Channels 1 to 13 |
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| Belgium (RTT&E/EMC/LVD) | Channels 1 to 13 |
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| Bulgaria (RTT&E/EMC/LVD) | Channels 1 to 13 |
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| Canada (CSA/cUL 950 3rd Edition) | Channels 1 to 11 |
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| China (MII) | Channels 1 to 11 |
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| Cyprus (RTT&E/EMC/LVD) | Channels 1 to 13 |
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| Czech Republic (RTT&E/EMC/LVD) | Channels 1 to 13 |
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| Denmark (RTT&E/EMC/LVD) | Channels 1 to 13 |
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| Finland (RTT&E/EMC/LVD) | Channels 1 to 13 |
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| France (RTT&E/EMC/LVD) | Channels 1 to 13 |
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| Germany (RTT&E/EMC/LVD) | Channels 1 to 13 |
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| Greece (RTT&E/EMC/LVD) | Channels 1 to 13 |
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| Hong Kong (OFTA) | Channels 1 to 13 |
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| Hungary (RTT&E/EMC/LVD) | Channels 1 to 13 |
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| Iceland (RTT&E/EMC/LVD) | Channels 1 to 13 |
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| (continued on the next page) |
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A - 2 | Appendix: Reference information |