I'm waiting for the Medusa 900mhz AP. I think it will be amazing. You can get more throughput in 900 and block out the noise coming from certain directions. Another reason to base a tower off a sector array design.
On Tue, Nov 22, 2016 at 11:30 AM, That One Guy /sarcasm < [email protected]> wrote: > 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. >
