Re: [PATCH v2 4/5] wireless-regdb: Update 5GHz rules for US

[Seth Forshee <seth.forshee@canonical.com>]

On Thu, Jul 23, 2015 at 11:32:59AM +0800, Chen-Yu Tsai wrote:
> The FCC increased the maximum conducted transmission power for the
> U-NII-1 (5150 ~ 5250 MHz) band to 30 dBm or 1 W for master devices
> and 24 dBm or 250 mW for mobile/portable devices.
> 
> Effective 6/2/2014.
> 
> See FCC KDB 905462 D06.
> 
> Signed-off-by: Chen-Yu Tsai <wens@csie.org>
> ---
>  db.txt | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/db.txt b/db.txt
> index cadd52c..29ba4b6 100644
> --- a/db.txt
> +++ b/db.txt
> @@ -1160,7 +1160,7 @@ country UG: DFS-FCC
>  
>  country US: DFS-FCC
>  	(2402 - 2472 @ 40), (30)
> -	(5170 - 5250 @ 80), (17), AUTO-BW
> +	(5170 - 5250 @ 80), (30), AUTO-BW

The 30 dB limit is for devices in master mode, for clients the limit
seems to be 250 mW (about 24 dB). Given the TPC requirement for U-NII
devices the most it could be bumped up to is 21 dB, unless there's some
other reason I don't know about to keep it at 17 dB.