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. >>>> >>>> >>> >>> >
