Re: [WISPA] Omni antenna for a rocket M900

[Blair Davis]

I am using a 'cheap' H-Pol omni, 9.5db or so, about $450, and a 9db V-Pol omni, about 6ft tall!!! It works...  ok.  on 900MHz , antennas are big and expensive. I am currently looking at an 11db H-Pol omni, waveguide type... about 11ft tall...  and almost $1k with shipping. A V-Pol 11db omni is over 11ft tall...  I find that you can get thru about 150 yards of medium-heavy tree cover when leafed out. I use 14 or 17 db yagi's from TrueGain on any cpe that is below -75 when leafed out Another thing we have learned is to use a mast and tripod when using the 900MHz on a roof.  get the antenna up away from the roof   Too much multipath otherwise... But, don't promise too much to the clients....  They are not gonna watch netflix in prime time...  I tend to get about 6-8Mb/s thru the AP...  And no more than 3-4Mb/s at any one client... I sell it as an alternative to Sat... And tell them up front to forget netflix... Latency is also a bit variable. If you have a spectrum analyzer, get it up on the leg with an omni of each type and get a day in each polarity.  If the noise floor is above -88 or so, IMO, don't use UBNT for 900MHz... Narrow channels are, IMO, the key to 900MHz, but then you limit thruput... I've thrown probably $50K down the 900MHz rathole in the last 8 years. The UBNT M900 gear is the first gear, IMO, that is cheap enough to use in the 900MHz but still works well enough to be worth the money. I also put up a 2.4GHz AP with a downtilted omni anywhere I do a 900MHz AP   Try hard to put people on the 2.4GHz AP.  YMMV Our answer, for most areas now, is micro or mini POP's We will use a 900MHz backhaul PtP to get into a location, then put up a 2.4GHz AP for the few houses it can see. On 3/16/2012 11:08 AM, Steve Barnes wrote: Blair, how is this setup working?  Is this a real Option for future deployments?  I have a grain Leg that would be perfect 25 homes within a 2 mile radius, however, light to moderate woods at 1 Mile almost 100% around the Gran leg.  Backhaul not a problem from top but without 900 I cant get 1 mile and only 3 house.   Steve Barnes General Manager PCS-WIN / RC-WiFi   From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Blair Davis Sent: Tuesday, March 13, 2012 9:03 PM To: WISPA General List Subject: Re: [WISPA] Omni antenna for a rocket M900   opps!  V-pol on chain 1 On 3/13/2012 9:02 PM, Blair Davis wrote: Reverse them.  Put the H-pol omni on chain 0 and the V-pol on chain.  Works much better. Not sure why, but my field testing proved it. On 3/13/2012 5:42 PM, Ryan Ghering wrote: We are looking into a situation like this, using a 900 Vertical Omni with on chain 0 and a Horizontal Omni on chain 1 with about 10 foot pf spacing between the two. I too would like to know if anyone else has done this..   Ryan   On Tue, Mar 13, 2012 at 3:28 PM, Jason Bailey <j284...@yahoo.com> wrote: What I did was connect the omni to one port,connected a h-pol 9db panel and pointed it toward the majority of customers. --- On Tue, 3/13/12, Eduardo <edua...@webjogger.net> wrote: From: Eduardo <edua...@webjogger.net> Subject: [WISPA] Omni antenna for a rocket M900 To: "WISPA General List" <wireless@wispa.org> Date: Tuesday, March 13, 2012, 5:26 PM   I have some customers inside a 1 mile radius of a POP. We want to use a rocket M900 with an omni antenna and put a dummy load on the other RPSMA lead, since we couldn't find any MIMO 900MHz omni available.   Does anyone have any experience doing this?   Thanks, Eduardo Webjogger Internet Services www.webjogger.net     -----Inline Attachment Follows----- _______________________________________________ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless _______________________________________________ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless   -- Ryan Ghering Network Operations - Plains.Net Office: 970-848-0475 - Cell: 970-630-1879 _______________________________________________ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless _______________________________________________ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless   _______________________________________________ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless -- West Michigan Wireless ISP Allegan, Michigan 49010 269-686-8648 A Division of: Camp Communication Services, INC

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