Wireshark · Ethereal-users: [Ethereal-users] WLAN Channels - Japan

[Mathew Boon <m.boon@xxxxxxxxxxxxxxxxxxxxxxxx>]

Hi,

This may be a bit off topic but I don't think this type of question sits 
definitively in any/most mailing lists.

Does anyone know when Japan's MKK dropped the Channel 14 only regulation 
and started allowing all channels 1-14 for 2.4 GHz WLAN. In the original 
802.11 standard it states that Japan is Channel 14 only, but recently 
(or, not so recently) cards are shipping that work on channels 1 thru 14 
in Japan.

Madwifi drivers for linux allow you to set the countrycode of operation 
using the numbering scheme defined in ISO 3166. A list of channels for 
each countrycode is listed in http://www.nuclearcat.com/athmap.txt . 
This list also suggests channel 1-14 availability in Japan.

Why this happened, and any links to articles discussing the change would 
also be of help. I am also interested in Spain..

Mathew.