Didn't Cambium say that Medusa 900mhz wasn't going to happen? On Tue, Nov 22, 2016 at 10:33 AM, Kurt Fankhauser <[email protected]> wrote:
> 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. >> > >
