Matt, Would you not agree that you probably have at least 9 db better noise figures than 2.4 at the same distance where you are seeing 9 db less signal? That is what I was trying to illustrate in my post. Even though the signal drops a little more in the 3650 coverage area than 2.4 we see roughly equivalent coverage areas due to lower noise floor and hence better SNR at the edge of the coverage area.
Matt, I seem to remember a post from you recently where you were touting a link through 4 miles of tress with 3650. Was I not reading that correctly? Scriv On Tue, Dec 2, 2008 at 11:03 AM, Matt Liotta <[EMAIL PROTECTED]> wrote: > We see on average 9dB less signal with 3650 than 2400 NLOS with all > things being equal. > > -Matt > > On Dec 2, 2008, at 11:42 AM, John Scrivner wrote: > > > Our coverage looks like 2.4 GHz coverage in the same environment > > with the > > exception of much lower noise floor which helps extend link budgets > > slightly > > and help increase reliability at the edge of the coverage area. > > Scriv > > > > > > On Tue, Dec 2, 2008 at 10:28 AM, Mike Hammett <[EMAIL PROTECTED] > > >wrote: > > > >> So according to the document from Hawaii, 3.6 GHz should have lower > >> atmospheric attenuation (I'm assuming this is similar or the same > >> to free > >> space loss) than 2.4 GHz. I'm not at sea level, but I am by no > >> means at > >> 9150 meters! > >> > >> Because water is the molecule at play here, that would also show a > >> difference in foliage penetration. Not trying to go through a > >> forest or > >> anything, but wondering how it would handle a tree or two. > >> > >> > >> ----- > >> Mike Hammett > >> Intelligent Computing Solutions > >> http://www.ics-il.com > >> > >> > >> > >> -------------------------------------------------- > >> From: "Patrick Shoemaker" <[EMAIL PROTECTED]> > >> Sent: Tuesday, December 02, 2008 10:10 AM > >> To: "WISPA General List" <wireless@wispa.org> > >> Subject: Re: [WISPA] 3650 Foliage > >> > >>> > >> > http://www.phys.hawaii.edu/~anita/web/paperwork/currently%20organizing/Military%20EW%20%20Handbook%20Excerpt/rf_absor.pdf<http://www.phys.hawaii.edu/%7Eanita/web/paperwork/currently%20organizing/Military%20EW%20%20Handbook%20Excerpt/rf_absor.pdf> > >> < > http://www.phys.hawaii.edu/%7Eanita/web/paperwork/currently%20organizing/Military%20EW%20%20Handbook%20Excerpt/rf_absor.pdf > >> > > >>> > >>> http://www.rfcafe.com/references/electrical/atm-absorption.htm > >>> > >>> > >>> Patrick Shoemaker > >>> Vector Data Systems LLC > >>> [EMAIL PROTECTED] > >>> office: (301) 358-1690 x36 > >>> http://www.vectordatasystems.com > >>> > >>> > >>> Mike Hammett wrote: > >>>> Well right. > >>>> > >>>> I could only assume that 3650 is better than 5.x GHz, but > >>>> sometimes you > >>>> match something's... I think natural frequency is the term I'm > >>>> looking > >>>> for. > >>>> Like how 70 - 80 GHz gear goes farther than 60 GHz, because 60 > >>>> GHz is > >> the > >>>> natural frequency of oxygen. > >>>> > >>>> > >>>> ----- > >>>> Mike Hammett > >>>> Intelligent Computing Solutions > >>>> http://www.ics-il.com > >>>> > >>>> > >>>> > >>>> -------------------------------------------------- > >>>> From: "Charles Wu (CTI)" <[EMAIL PROTECTED]> > >>>> Sent: Tuesday, December 02, 2008 9:53 AM > >>>> To: "WISPA General List" <wireless@wispa.org> > >>>> Subject: Re: [WISPA] 3650 Foliage > >>>> > >>>>>> Have we gotten any reports how 3650 works with foliage? > >>>>> It doesn't > >>>>> > >>>>>> Would MIMO have any affect on foliage penetration ability? > >>>>> Sure, it might help, but 700 would help more > >>>>> > >>>>> -Charles > >>>>> > >>>>> This message is intended only for the use of the individual or > >>>>> entity > >> to > >>>>> which it is addressed and may contain information that is > >>>>> privileged, > >>>>> confidential and exempt from disclosure under applicable law. If > >>>>> the > >>>>> reader of this message is not the intended recipient, or the > >>>>> employee > >> or > >>>>> agent responsible for delivery of the message to the intended > >> recipient, > >>>>> you are hereby notified that any dissemination, distribution or > >>>>> copying > >>>>> of > >>>>> this communication is strictly prohibited. If you have received > >>>>> this > >>>>> communication in error, please notify us immediately by > >>>>> telephone at > >>>>> 630-344-1586. > >>>>> > >>>>> > >>>>> > >> > -------------------------------------------------------------------------------- > >>>>> WISPA Wants You! Join today! > >>>>> http://signup.wispa.org/ > >>>>> > >> > -------------------------------------------------------------------------------- > >>>>> > >>>>> WISPA Wireless List: wireless@wispa.org > >>>>> > >>>>> Subscribe/Unsubscribe: > >>>>> http://lists.wispa.org/mailman/listinfo/wireless > >>>>> > >>>>> Archives: http://lists.wispa.org/pipermail/wireless/ > >>>>> > >>>> > >>>> > >>>> > >> > -------------------------------------------------------------------------------- > >>>> WISPA Wants You! Join today! > >>>> http://signup.wispa.org/ > >>>> > >> > -------------------------------------------------------------------------------- > >>>> > >>>> WISPA Wireless List: wireless@wispa.org > >>>> > >>>> Subscribe/Unsubscribe: > >>>> http://lists.wispa.org/mailman/listinfo/wireless > >>>> > >>>> Archives: http://lists.wispa.org/pipermail/wireless/ > >>> > >>> > >>> > >> > -------------------------------------------------------------------------------- > >>> WISPA Wants You! Join today! > >>> http://signup.wispa.org/ > >>> > >> > -------------------------------------------------------------------------------- > >>> > >>> WISPA Wireless List: wireless@wispa.org > >>> > >>> Subscribe/Unsubscribe: > >>> http://lists.wispa.org/mailman/listinfo/wireless > >>> > >>> Archives: http://lists.wispa.org/pipermail/wireless/ > >>> > >> > >> > >> > >> > -------------------------------------------------------------------------------- > >> WISPA Wants You! Join today! > >> http://signup.wispa.org/ > >> > >> > -------------------------------------------------------------------------------- > >> > >> WISPA Wireless List: wireless@wispa.org > >> > >> Subscribe/Unsubscribe: > >> http://lists.wispa.org/mailman/listinfo/wireless > >> > >> Archives: http://lists.wispa.org/pipermail/wireless/ > >> > > > > > > > -------------------------------------------------------------------------------- > > WISPA Wants You! Join today! > > http://signup.wispa.org/ > > > -------------------------------------------------------------------------------- > > > > WISPA Wireless List: wireless@wispa.org > > > > Subscribe/Unsubscribe: > > http://lists.wispa.org/mailman/listinfo/wireless > > > > Archives: http://lists.wispa.org/pipermail/wireless/ > > > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > > -------------------------------------------------------------------------------- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
