I imagine it was easier back when you could sell 256k and expect people
to be happy. In some places it's 900mhz or nothing. In that case,
maybe you charge whatever is required to make it work.
At the moment the only new 900mhz we have are fringe cases. The only
other 900 we have is legacy stuff. On the legacy ones, we hate fussing
with the interference and the customers hate the available speed, and
there aren't enough customers to easily justify an upgrade. So I get
what you're saying, but I have to believe there's somebody for whom 900
is either the right move or the only move.
------ Original Message ------
From: "Josh Reynolds" <[email protected]>
To: [email protected]
Sent: 11/22/2016 10:41:34 AM
Subject: Re: [AFMUG] Dual-slant 900mhz omni (for PMP450) ordering group
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.
