Date: Tue, 10 Jan 2017 17:44:55 +0100 From: swjatoslaw gerus <milstar2@eml.cc> To: Polytropon <freebsd@edvax.de> Cc: freebsd-questions@freebsd.org Subject: Re: Fwd: iwconfig format , if free bsd have not , author is false person for freebsd -only mobile application 16 hours per dday Message-ID: <1484066695.568939.843273841.33313BCA@webmail.messagingengine.com> In-Reply-To: <20170110155719.9664865e.freebsd@edvax.de> References: <1484050483.3581104.842980993.3CF18E82@webmail.messagingengine.com> <20170110155719.9664865e.freebsd@edvax.de>
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Polytropon <freebsd@edvax.de> > > with limit -174 dbm for 1 hz bandwitch=20 >=20 > 1 Hz? One (whole) Hertz? I doubt that's true... :-) #################################################### More practical if normalized to 1mW in a 50=CE=A9system =E2=80=A2Np (dBm/Hz) =3D 10log(4.004e-21/.001W) =3D -174 dBm/Hz =E2=80=A2Using this equation we can now relate the Np to a 50 =CE=A9test sy= stem at 1 mW =E2=80=A2This is common standard for communication test equipment =E2=80=A2Therefore: -174 dBm/Hz is the output power of a 50 =CE=A9resistor = at the average temperature of the earth in a 1 Hz bandwidth Sorry Gentlemen=20 Need not your opinion to this question check publication of Draper Laboratory=20 http://www.draper.com/solution/gps-modernization --=20 http://www.fastmail.com - The professional email service
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