secondary lobe? did you try to calculate the expected signal?
> Ok tried 20mhz, throughput drops about 10mbps to about 30mbps. My signal > is at least 20db better than noise (signal -59 noise -85+). ACK is set > auto with distance of 2 miles (actual distance is approx 1.5mi). cable > not an issue. any thoughts? > > *From:*[email protected] [mailto:[email protected]] > *On Behalf Of *Tom DeReggi > *Sent:* Monday, October 24, 2011 3:27 PM > *To:* WISPA General List > *Subject:* Re: [WISPA] UBNT Rocket M5 Throughput > > You probably either have 1) noisy channels, 2) incorrect ACK distances, > 3) not optimal firmware version, 4) Or some third party factor effecting > testing, such as testing devices that cant generate that much traffic or > buffer sizes of routers. > > The first thing to try is switch down to 20mhz channel and see if the > speed tests stays the same or higher, or if it drops proportionally. I > bet the 20Mhz channel will perform better. > > Dont rely on CCQ on its own. Its one indicator, but does not mean you > have a clean channel for sure. Also remember, the Eth port is limited to > 100mb, and if there is cable quality issues such as due to distance, it > could autoadjust to half duplex. Test laptop to PC, isolating RF path, > just for grins. It is very rare to find 40Mhz of clean spectrum for Dual > polarity, and even the slightest packet loss and delay can drastically > reduce TCP throughput. > > Tom DeReggi > RapidDSL & Wireless, Inc > IntAirNet- Fixed Wireless Broadband > > ----- Original Message ----- > > *From:*Patrick D. Nix, Jr <mailto:[email protected]> > > *To:*WISPA General List <mailto:[email protected]> > > *Sent:*Monday, October 24, 2011 3:50 PM > > *Subject:*Re: [WISPA] UBNT Rocket M5 Throughput > > Problem is when I turn airmax on the speed really goes in the > toilet. Best I can get is about 20mbps. According to ubiquiti airmax > needs to be off up to 15km links, anything over that airmax needs to > be on. Do you have good success with short airmax ptp links? > > *From:*[email protected] > <mailto:[email protected]> > [mailto:[email protected]] *On Behalf Of *Travis Johnson > *Sent:* Monday, October 24, 2011 2:45 PM > *To:* WISPA General List > *Subject:* Re: [WISPA] UBNT Rocket M5 Throughput > > Turn AirMax on. > > Travis > > On 10/24/2011 1:36 PM, Patrick D. Nix, Jr wrote: > > What is the best real TCP throughput up/down anyone is getting on a > PtP ubnt connection? We have two rocket M5 approx 1.5 mi, CCQ > 97-98%, 40mhz channel width, airmax off. > > Displayed TX/RX rate is 270/270. Real TCP throughput via iperf radio > to radio is 40-45mbps. > > Are there some config changes needed perhaps? > > > > > > > > > -------------------------------------------------------------------------------- > > WISPA Wants You! Join today! > > http://signup.wispa.org/ > > > -------------------------------------------------------------------------------- > > > > WISPA Wireless List:[email protected] <mailto:[email protected]> > > > > 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: [email protected] > > 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: [email protected] > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ -- Ing. Paolo Di Francesco Level7 s.r.l. unipersonale Sede operativa: Largo Montalto, 5 - 90144 Palermo C.F. e P.IVA 05940050825 Fax : +39-091-8772072 assistenza: (+39) 091-8776432 web: http://www.level7.it -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: [email protected] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
