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[198.54.129.52]) by smtp.gmail.com with ESMTPSA id f185sm10810091pfg.39.2021.12.05.22.45.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 05 Dec 2021 22:45:48 -0800 (PST) Sender: Sultan Alsawaf From: Sultan Alsawaf X-Google-Original-From: Sultan Alsawaf To: sforshee@kernel.org Cc: wireless-regdb@lists.infradead.org, linux-wireless@vger.kernel.org, Sultan Alsawaf Subject: [PATCH] wireless-regdb: Raise DFS TX power limit to 250 mW (24 dBm) for the US Date: Sun, 5 Dec 2021 22:45:20 -0800 Message-Id: <20211206064520.11305-1-sultan@kerneltoast.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Sultan Alsawaf According to 47 CFR § 15.407(a)(2), the U-NII-2A (5.25-5.35 GHz) and U-NII-2C (5.47-5.725 GHz) DFS bands are subject to the following [1]: "For the 5.25-5.35 GHz and 5.47-5.725 GHz bands, the maximum conducted output power over the frequency bands of operation shall not exceed the lesser of 250 mW or 11 dBm + 10 log B, where B is the 26 dB emission bandwidth in megahertz." As such, increase the TX power limit for the U-NII-2A and U-NII-2C DFS bands to 250 mW (24 dBm) to match the FCC's current rules. These power limits have remained unchanged since the § 15.407 amendment by the FCC in 2014 [2]. [1] https://www.ecfr.gov/current/title-47/chapter-I/subchapter-A/part-15/subpart-E/section-15.407#p-15.407(a)(2) [2] https://www.federalregister.gov/d/2014-09279/p-131 Signed-off-by: Sultan Alsawaf --- db.txt | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/db.txt b/db.txt index 6e8dbef..b898799 100644 --- a/db.txt +++ b/db.txt @@ -1596,12 +1596,12 @@ country US: DFS-FCC (2400 - 2472 @ 40), (30) # 5.15 ~ 5.25 GHz: 30 dBm for master mode, 23 dBm for clients (5150 - 5250 @ 80), (23), AUTO-BW - (5250 - 5350 @ 80), (23), DFS, AUTO-BW + (5250 - 5350 @ 80), (24), DFS, AUTO-BW # This range ends at 5725 MHz, but channel 144 extends to 5730 MHz. # Since 5725 ~ 5730 MHz belongs to the next range which has looser # requirements, we can extend the range by 5 MHz to make the kernel # happy and be able to use channel 144. - (5470 - 5730 @ 160), (23), DFS + (5470 - 5730 @ 160), (24), DFS (5730 - 5850 @ 80), (30), AUTO-BW # https://www.federalregister.gov/documents/2021/05/03/2021-08802/use-of-the-5850-5925-ghz-band # max. 33 dBm AP @ 20MHz, 36 dBm AP @ 40Mhz+, 6 dB less for clients