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802.11a Frequencies

1 posts by 1 authors in: Forums > CWNA - Enterprise Wi-Fi Admin
Last Post: April 9, 2008:
  • By neilmac
    Reply

    OK, let's see if I got this right...

    802.11a uses the U-NII bands:

    5.15 - 5.25 GHz
    5.25 - 5.35
    5.470 - 5.725
    5.725 - 5.825

    That much is clear, my question then is on the channels.

    I am looking at many documents, however I will pull this example from s37chan.pdf from Cisco:

    Chan 36 - 5.180
    Chan 40 - 5.200
    Chan 44 - 5.220
    Chan 48 - 5.240

    So, in U-NII 1, I have 4 channels to choose from ? What about 5.160 ?

    If I use the three U-NII bands (the first ranges three shown above) I seem to have 19 channels available for indoor use. That's in Europe, by the way.

    The highest band isn't available in Europe.

    Does anyone know of a nice clean resource that explains it ?

    Thanks,

    Neil

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