I have always been scared to use them (24 Ghz) beyond 2 miles.
I want to know (and perhaps Liz or Tim are still lurking here), is there any
way to re-use your 11 GHz channels in your local area?
The big problem for me is the cost of the license.
UBNT or Mimosa ought to figure out a way to package the radio, antenna and
license for one screaming good deal.
Just tell them the end points and a turn-key package shows up ready and legal
to install.
I remember years ago, a company I worked for had nationwide licenses for almost
all the microwave bands.
It was supposedly for emergency restoration use etc, and they were all narrow
channels, but I wonder if such a beast still exists.
If you could re-use your 11 GHz channels within your original zone of
protection it would really save some money.
From: Josh Reynolds
Sent: Saturday, February 10, 2018 4:27 PM
To: af@afmug.com
Subject: Re: [AFMUG] 24 GHz vs 11 GHz
We had a lot of 4 mile+ links on AF24's that worked perfectly in ALASKA on the
coast.
Some places have more rain/hr than others.
On Sat, Feb 10, 2018 at 5:11 PM, Adair Winter <ada...@amarillowireless.net>
wrote:
AF24 is only going to be 5 9's reliable to about 1-2 miles depending on your
rain zone.
for 2-4 miles you could use 23Ghz (way more EIRP than 24Ghz)
4-8 miles 18Ghz
8-20 miles 11 Ghz
and anything longer than that 6Ghz. unless you can mount really big dishes
for 11.
On Sat, Feb 10, 2018 at 5:05 PM, Gino A. Villarini <g...@aeronetpr.com> wrote:
For 6-10 miles 24 ghz its way out of the question. Stick to 11 ghz.
From: Af <af-boun...@afmug.com> on behalf of David Coudron
<david.coud...@advantenon.com>
Reply-To: "af@afmug.com" <af@afmug.com>
Date: Saturday, February 10, 2018 at 6:57 PM
To: "af@afmug.com" <af@afmug.com>
Subject: [AFMUG] 24 GHz vs 11 GHz
I know this topic has come up before, but thought I would throw it out
again to hear additional thoughts as products continue to evolve. We have
been doing primarily 5 GHz backhaul using Mimosa products for the last couple
of years. Their frequency reuse has really helped us, but we are starting to
see more locations that have lots of noise. We’d like to make the jump to
higher frequencies and are looking at 11 GHz and 24 GHz for that. The links
we need are fairly short, 6-10 miles max, which pushes the limits of the 24 GHz
solutions, but with a very clean line of site we think we are in range for the
links we are looking at as far as the design tools tell us. For 11 GHz, we
would likely stay with the Mimosa product line, we know it pretty well and have
all the management tools in place for it. For 24 GHz we’d likely go with the
Ubiquiti AF 24 or AF 24 HD. We have worked with Ubiquiti stuff here and
there, and just don’t have much familiarity with any other options outside of
AirFiber. Here is where we see the Pros and Cons of the two options:
Mimosa 11 GHz Pros:
1.. Licensed, should be clean spectrum for the full term of the license
and require less babysitting for interference
2.. Should support longer links, but that isn’t a big consideration for
us as it looks like everything we will need is under the limits of the HD for
sure and likely the AF 24 as well
c.. Little less susceptible to rain fade
Cons:
1.. Have to mess around with the license and there is a cost associated
with it
b.. Have to buy the dish separately, and know which to use before
applying for the license
c.. Not quite as much throughput (when compared to the AF 24 HD)
d.. More expensive that the AF 24 (but likely a little less than the HD)
Ubiquiti AF 24 Pros:
1.. All in one unit, easy to figure out what to have on hand for all
links
b.. No messing around with licenses, making it much quicker to deploy
c.. Higher throughput on the HD
Cons:
1.. Unlicensed. Might fight other noise out there, and even quiet links
now might have noise later
2.. Not as familiar with this tool set as we are with Mimosa, although
this isn’t a big consideration as we have worked with lots of Ubiquiti products
c.. Cost of HD is pretty high for an unlicensed link
Here are some questions we are hoping for help with:
1.. How much room in the unlicensed band is there to move channels if you
see other noise out there? We have been looking but are finding it tough to
figure out if we run wide channels, and see noise, will we be able to move to
other channels.
b.. Is it reasonable to think you can push 1.2 aggregate IP traffic
across any of the three options B11, AF24 or AF24HD? Seems like a well
planned link with great line of site at 6 miles should be able to, but looking
for some real world experience.
c.. Any oddball items we should take into consideration other than the
ones already mentioned here? Or are we missing some obvious questions?
Thanks,
David Coudron
Gino A. Villarini
President
Metro Office Park #18 Suite 304 Guaynabo, Puerto Rico 00968
--
Adair Winter
VP, Network Operations / Co-Owner
Amarillo Wireless | 806.316.5071
C: 806.231.7180
http://www.amarillowireless.net
