Jerry you are a man of few words. Invisible wisdom. Steve Barnes RC-WiFi Wireless Internet Service
-----Original Message----- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Fred Goldstein Sent: Wednesday, August 04, 2010 4:25 PM To: WISPA General List Subject: Re: [WISPA] Multiple sectors, one frequency? At 8/4/2010 04:03 PM, you wrote: >Jerry Richardson >Sent Mobile Jerry, did the body of your message get lost? I just got your .sig. Thanks. >On Aug 4, 2010, at 12:58 PM, "Fred Goldstein" <fgoldst...@ionary.com> >wrote: > > > At 8/4/2010 03:37 PM, Jerry Richardson wrote: > >> It will not work. > >> > >> But you would be surprised how well these run at 5 or 10 MHz > >> channels. > > > > With how much spacing between them? If I could put them on adjacent > > 10 MHz center frequencies, that would solve a lot of problems, and > > even 5 MHz channels with 10 MHz spacing (and thus a 5 MHz guard > > band) would be reasonable. But 20 MHz spacing is problematic. > > > > How much throughput can a quarter-channel get? The Rocket data sheet > > is not very complete; it doesn't even mention subchannel support. > > The RM5 spec sheet says that MCS12 has -84 dB sensitivity. That > > gets 78 Mbps in a full 20 Mbps channel, 162 in a double-wide, and a > > bit more with the short guard interval. If I could share 15 Mbps > > among the sector users, in 5 MHz, I think everyone should be happy. > > And I'd expect -89 to -90 sensitivity. > > > >> Jerry Richardson > >> Sent Mobile > >> > >> On Aug 4, 2010, at 12:33 PM, "Fred R. Goldstein" > >> <fgoldst...@ionary.com> wrote: > >> > >>> If I have a site with, say, Ubiquiti Rocket M5 radios plugged into > >>> 120 degree sector antennas, with Airmax (TDMA) turned on, do they > >>> have to be on separate frequencies, or can they coexist on one? > >>> The > >>> 5.8 GHz band is kind of crowded to be having three access > >>> frequencies plus two or more backhaul frequencies... thanks. > >>> > > > > -- > > Fred Goldstein k1io fgoldstein "at" ionary.com > > ionary Consulting http://www.ionary.com/ > > +1 617 795 2701 > > > > > > > > --- > > --- > > --- > > --- > > -------------------------------------------------------------------- > > 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/ -- Fred Goldstein k1io fgoldstein "at" ionary.com ionary Consulting http://www.ionary.com/ +1 617 795 2701 -------------------------------------------------------------------------------- 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/
