I just dont see there being a 50 unit demand for 1200 dollar antennas in the WISP market all at once
I wish with all these magic mumimomachismo anteenas they would build a 360 degree array of small, tight sectors you can select which of the sectors you want to use or combine, or divvy up between APs, I think we will see it on the horizon with all the multiarray smart antennas On Tue, Nov 22, 2016 at 10:21 AM, Jaime Solorza <[email protected]> wrote: > 900Mhz is an interesting band...almost 90% of SCADA systems for water and > waste water use licensed and unlicensed versions due to NLOS capabilities > and variety of solutions. However, there is a trend to use 3.65 and 5Ghz > solutions due to low cost gear and more bandwidth for cameras and IP based > automation products becoming the standard. Not sure if noise will get > clearer as these same utilities are installing meters using 900MHz. The > Omni question back in the 1990's when we were deploying NCR WaveLAN based > solutions led to me designing an array using four 90 degree Huber Suhner > panel antennas and a 4 way power divider/combiner. We designed an aluminum > mount for it and also used HS jumpers....Keith Ebel from HS tested in their > chamber and sent us the plot....Wish I could find the plots, stored > somewhere, but it was a thing of beauty. Anyways, it extended range of > coverage and worked well where we deployed it...Solectek tested it and like > it but 2.4GHz took off so I never pursued it. Maybe a weekend project for > Chuck... > > > Jaime Solorza > Wireless Systems Architect > 915-861-1390 > > On Tue, Nov 22, 2016 at 8:41 AM, Josh Reynolds <[email protected]> > wrote: > >> I would need to see a map. Maybe some of your guys experiences with >> 900mhz were different from mine in rural Alaska, but the use of the band + >> lack of density just didn't make any investment viable. Even if the thought >> was to backfill with towers and nlos/los later on down the road, the return >> just wasn't there. >> >> On Nov 22, 2016 9:38 AM, "Kurt Fankhauser" <[email protected]> >> wrote: >> >>> 900mhz is a good solution to get a lot of coverage into an area you are >>> building into and then you come in later and put up more towers to get >>> people switched off of it and on a LOS technology and then maybe you still >>> will only need the 900 sectors to cover a couple directions from the tower >>> so you can take all the sectors down but 1 or 2. >>> >>> On Tue, Nov 22, 2016 at 10:36 AM, Josh Reynolds <[email protected]> >>> wrote: >>> >>>> Considering 900mhz is only going to get worse in almost every location, >>>> why would one continue throwing money at this? Is the time and money even >>>> expected to be recovered? Equipment costs, installation, configuration, >>>> constant tweaking, etc... Only to find out that in the very near future you >>>> will have to go a different route. >>>> >>>> What am I missing? >>>> >>>> On Nov 22, 2016 9:29 AM, "Bill Prince" <[email protected]> wrote: >>>> >>>>> Could also use a 2-way splitter, and only lose about 3db. Then put two >>>>> up with an ABAB configuration. You'd still be using 2 APs, but the >>>>> performance would be quite a bit better. >>>>> >>>>> >>>>> bp >>>>> <part15sbs{at}gmail{dot}com> >>>>> >>>>> >>>>> On 11/22/2016 7:24 AM, Adam Moffett wrote: >>>>> >>>>> Maybe he's the one guy with no noise in 900mhz. We don't know that >>>>> from back here. >>>>> >>>>> You could use a cheaper V+H antenna on the AP as long as you use V+H >>>>> antennas on the CPE. >>>>> >>>>> You could also build an array of four sector antennas with a four-way >>>>> splitter. You lose at least 6db on the splitter, but if you're looking at >>>>> 5dbi and 7dbi omnis then it's probably in the same ballpark. The good >>>>> thing is you could set a different tilt angle in different directions and >>>>> if load required it in the future you could go to two 2-way splitters and >>>>> two APs. >>>>> >>>>> ------ Original Message ------ >>>>> From: "Kurt Fankhauser" <[email protected]> >>>>> To: [email protected] >>>>> Cc: [email protected] >>>>> Sent: 11/22/2016 10:12:13 AM >>>>> Subject: Re: [AFMUG] Dual-slant 900mhz omni (for PMP450) ordering group >>>>> >>>>> >>>>> You are wasting you time with omni's on 900mhz. So your sacrificing a >>>>> lot of gain to get 360 degree coverage which in turn will result in higher >>>>> overall noise floor and lower signal when this 450 product really starts >>>>> to >>>>> shine you need 25db+ SNR at the client side to get the higher modulation >>>>> connections. So even if you got the Omni you'd going to be lucky to get >>>>> 8-10db SNR to the client which means your only going to be running at 2x >>>>> speed and getting 10mbps download which will probably be intermittent. I >>>>> had a lot of omnis on FSK 900 and I can tell you that after having used >>>>> the >>>>> cambium slant sector on 450 I am a firm believer in sectors only for 900 >>>>> from here on out. I have connections that are 3-4 miles out running 10mhz >>>>> channels and getting 40mbps down/10mbps up. You will never get that with >>>>> an >>>>> Omni unless you have LOS and if you have LOS then why aren't you using >>>>> another frequency band? >>>>> >>>>> On Tue, Nov 22, 2016 at 2:03 AM, Colin Stanners <[email protected]> >>>>> wrote: >>>>> >>>>>> I've been looking for dual-slant 900mhz omni options that would allow >>>>>> lower-cost PMP450 900mhz deployment on middle-of-the-woods towers where >>>>>> there are only a small number of customers (and low noise). I know that >>>>>> "omnis suck compared to sectors", but having nothing at all sucks more. >>>>>> Due to the difficulty of designing dual-slant antennas and the small >>>>>> market, options are very few. >>>>>> >>>>>> Commscope has the CH360QS, only 5dbi gain at ~900mhz... and it's a >>>>>> cellular base station omni with all the fancy doodads: 1800-2200Mhz band >>>>>> that WISPs can't use, internal GPS antenna, internal diplexer, >>>>>> remote-controlled signal tilt on the upper band, etc. At $3500 per >>>>>> antenna I hope that it makes your breakfast too. >>>>>> >>>>>> Alpha has the best design that I found at present, the AW3464. ~7dbi >>>>>> gain http://alphaantennas.com/products/small-cells/aw3464/ . It's >>>>>> ~$1200 USD which is still inexpensive compared to any other NLOS options. >>>>>> >>>>>> But currently those antennas cannot be bought - I spoke with >>>>>> Crossover Distribution and Alpha, they haven't received enough POs to >>>>>> make >>>>>> a production run, need 50 orders at a bare minimum. So if anyone else is >>>>>> really interested in one or more of these antennas, ready to buy for sure >>>>>> if they are available, e-mail me "If available, I will buy x number of >>>>>> the >>>>>> Alpha AW3464 at $1200/USD each from Crossover." and I'll make a list, >>>>>> once >>>>>> it hits 50+ antennas I'll speak with Crossover and see if it can happen. >>>>>> >>>>>> >>>>> >>>>> >>> > -- If you only see yourself as part of the team but you don't see your team as part of yourself you have already failed as part of the team.
