Yeah, I wondered if you were joking about that.
Can you imagine the size of that antenna? Like take the 5 GHz Medusa antenna and scale it up 6x? Now put 4 of them on the tower. Although I guess cellular arrays do it in 700 MHz. Maybe with 3-4 separate physical antennas per array and actual active beamforming. From: Af [mailto:[email protected]] On Behalf Of Mathew Howard Sent: Tuesday, November 22, 2016 11:05 AM To: af <[email protected]> Subject: Re: [AFMUG] Dual-slant 900mhz omni (for PMP450) ordering group 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] <mailto:[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] <mailto:[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] <mailto:[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 <tel:915-861-1390> On Tue, Nov 22, 2016 at 8:41 AM, Josh Reynolds <[email protected] <mailto:[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] <mailto:[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] <mailto:[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] <mailto:[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] <mailto:[email protected]> > To: [email protected] <mailto:[email protected]> Cc: [email protected] <mailto:[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] <mailto:[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.
