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From: Seth Forshee <seth.forshee@canonical.com>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: cory novak <cory.novak@gmail.com>, wireless-regdb@lists.infradead.org
Subject: Re: [wireless-regdb] [RFC] wireless-regdb: Update 5 GHz rules for Canada
Date: Tue, 7 Feb 2017 08:04:34 -0600	[thread overview]
Message-ID: <20170207140434.GA109741@ubuntu-hedt> (raw)
In-Reply-To: <1486453950.2643.1.camel@sipsolutions.net>

On Tue, Feb 07, 2017 at 08:52:30AM +0100, Johannes Berg wrote:
> On Mon, 2017-02-06 at 14:50 -0600, Seth Forshee wrote:
> > +	(5150 - 5250 @ 80), (23), AUTO-BW
> 
> For 20 MHz this is right, since the document says:
> 
>     The maximum e.i.r.p. shall not exceed 200 mW or 10 + 10 log10 B,
>     dBm, whichever power is less. B is the 99% emission bandwidth in
>     megahertz. The e.i.r.p. spectral density shall not exceed 10 dBm in
>     any 1.0 MHz band.
> 
> However, for < 20 MHz, like 5 or 10, which we in theory do support, you
> can't use that much due to the spectral density requirement. It seems
> possible that that's where the 17 dBm came from, since 10 + 10 log10(5)
> is about 17.

Yes, thanks. I had forgotten to consider bandwidths less than 20 MHz.

Seth

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  reply	other threads:[~2017-02-07 14:05 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CAPw1JcdLDkW9xEUfh-764kuC643DAJ+qWNf4RxmoyUXbpc-D5w@mail.gmail.com>
2017-02-06 19:12 ` [wireless-regdb] Fwd: possible mismatch Canadian regulatory info cory novak
2017-02-06 19:39   ` Seth Forshee
2017-02-06 19:44     ` cory novak
2017-02-06 20:50       ` [wireless-regdb] [RFC] wireless-regdb: Update 5 GHz rules for Canada Seth Forshee
2017-02-07  7:52         ` Johannes Berg
2017-02-07 14:04           ` Seth Forshee [this message]
2017-02-07 14:15             ` Johannes Berg
2017-02-13 13:58             ` Matthias May
2017-03-01 15:07               ` Seth Forshee
2017-03-01 15:35                 ` Johannes Berg
2017-03-01 15:49         ` Seth Forshee

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