LEDE US Region 5 GHz WLAN TX Power Limits don't match current FCC limits
Username: Jon Grossart
Origin: https://bugs.openwrt.org/index.php?do=details&task_id=80
I noticed this issue looking into the wifi transmit power settings on the Archer C2600 (v1.0, US region). I’m not sure what is changeable in the LEDE code itself versus what is HW encoded.
iw reg get
country US: DFS-FCC (2402 - 2472 @ 40), (N/A, 30), (N/A) (5170 - 5250 @ 80), (N/A, 23), (N/A), AUTO-BW (5250 - 5330 @ 80), (N/A, 23), (0 ms), DFS, AUTO-BW (5490 - 5730 @ 160), (N/A, 23), (0 ms), DFS (5735 - 5835 @ 80), (N/A, 30), (N/A) (57240 - 63720 @ 2160), (N/A, 40), (N/A)
FCC Regulation:
http://www.ecfr.gov/cgi-bin/text-idx?node=47:1.0.1.1.16#se47.1.15_1407
U-NII-1 (5.15-5.25
GHz
)
§15.407(a)(1)(i) and §15.407(a)(1)(ii)
limit for AP can be up to 1 W/30 dBm
openWRT/LEDE limits it to 23 dBm rather than 30 dBm
U-NII-2A/C (5.25-5.35
GHz
and 5.47-5.725
GHz
)
§15.407(a)(2)
limit for AP is the lesser of 250 mW [24 dBm] or 11 dBm + 10 log B, where B is the 26 dB emission bandwidth in megahertz
openWRT/LEDE limits it to 23 dBm rather than 24 dBm
Extra Supporting Documentation: