Date: Fri, 9 May 2003 10:00:20 +0200 (CEST) From: Dirk-Willem van Gulik <dirkx@webweaving.org> To: "M. Warner Losh" <imp@bsdimp.com> Cc: freebsd-mobile@freebsd.org Subject: Re: wi question Message-ID: <20030509095608.O50944-100000@foem> In-Reply-To: <20030508.225022.02275677.imp@bsdimp.com>
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On Thu, 8 May 2003, M. Warner Losh wrote: > In message: <Maios.1052402007.61508910.84266846593006672> > Alej Lekatsas <alej@agriroot.aua.gr> writes: > : Is the a way to control the transmit output power on wi card ? > > Yes. However, it isn't in the tree because I don't want to enable > people's breaking the law. However, there's some power level code in Actually Warner, that usually works the -other- direction. I.e. you want to be able to reduce the output when you are using a good directional antenna. Part of this is to comply with the 100mWatt EIRP regulation of ISM. But more so to not over saturate a receiver at the other end or make aggregation points possible. We regularly at www.wirelessleiden.net are forced to swap a Senao card for a WMP11 just so that we reduce the power on a link. So right now; given that almost all cards output (a lot) less than 100mWatt and that one or two connectors will easily half that - and given that most people us directional antenna's - the legal argument would argue for certanly the ability to -lower- the output of cards. Not worry about people setting it higher. Dw
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