Well, the FCC & Canada regdomains should disable those TDWR channels for an AP. But regdomains for client devices should not disable those channels. In our licensed sw, we use different regdomains for AP vs. STA to accomplish this. Not sure how linux handles this. Michael Green green at qualcomm.com Qualcomm Atheros, Inc. 781-400-1491 (office) 508-380-4921 (cell) -----Original Message----- From: Luis R. Rodriguez [mailto:mcgrof@xxxxxxxxx] Sent: Thursday, May 05, 2011 11:57 AM To: Juuso Oikarinen; Michael Green Cc: ext John W. Linville; linux-wireless at vger.kernel.org; wireless-regdb at lists.infradead.org Subject: Re: wireless-regdb US and CA settings incorrect? On Thu, May 5, 2011 at 4:21 AM, Juuso Oikarinen <juuso.oikarinen at nokia.com> wrote: > Hi John, all, > > The following is an excerpt of the db.txt from most recent > wireless-regdb. > > country US: > ? ? ? ? (2402 - 2472 @ 40), (3, 27) > ? ? ? ? (5170 - 5250 @ 40), (3, 17) > ? ? ? ? (5250 - 5330 @ 40), (3, 20), DFS > ? ? ? ? (5490 - 5600 @ 40), (3, 20), DFS > ? ? ? ? (5650 - 5710 @ 40), (3, 20), DFS > ? ? ? ? (5735 - 5835 @ 40), (3, 30) > > country CA: > ? ? ? ? (2402 - 2472 @ 40), (3, 27) > ? ? ? ? (5170 - 5250 @ 40), (3, 17) > ? ? ? ? (5250 - 5330 @ 40), (3, 20), DFS > ? ? ? ? (5490 - 5710 @ 40), (3, 20), DFS > ? ? ? ? (5735 - 5835 @ 40), (3, 30) > > We are under the understanding that the Canadian national rules deny > the usage of the 5490-5710 range of frequencies (ref from RSS-210), > but the range is present in the allowed range of frequencies for the CA region: > > "Additional requirements for the band 5600-5650 MHz: Until further > notice, devices subject to this Section shall not be capable of > transmitting in the band 5600-5650 MHz, so that Environment Canada > weather radars operating in this band are protected." > > Then again, the FCC rules (15.407) do not prohibit the mentioned range > of frequencies within the US (with DFS and limited power level) but in > the regulatory database that range is missing. > > > Is there a bug in the regulatory db, or am I misunderstanding something? Michael, any opinion on this? Luis
