On Mon, Aug 2, 2010 at 4:55 AM, yogeshp <yogeshp@xxxxxxxxxxx> wrote: > Hello All, > > Crda db.txt has following entries for JP: > (2402 - 2472 @ 40), (N/A, 20) > (2457 - 2482 @ 20), (N/A, 20) > > Why are channel 12 and 13 for JP disallowed to operate in 40Mhz by this file? > > As per Annex 11J of latest 802.11n spec, for Japan, channel 1-7 are allowed in HT40+ and > channel 5-13 are allowed in HT40- mode. Do you mean Section 11J.1? That stuff defines a regulatory class, its not a regulatory text though. Linux dynamically computes the HT40+ or HT40- allowed channel map based on frequency ranges supported and the max allowed bandwidth for its frequency ranges. Michael, can you confirm if HT0 is allowed on the 2.4 GHz band in JP ? Luis -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
