Hey guys, Thanks a ton for the input. Looks like we got oversold on the distance from the link planning tools for 24 GHz. This conversation has been really helpful, although I had to call over 3 different people to help interpret Steve’s reply 😊 Once they stopped laughing at this thread and the “tying down wires” reply, we got it figured out.
For us, our links are mostly in the 6 mile or a little over 6 mile range. Sounds like 11 GHz is the right move. Much appreciated. David Coudron From: Af [mailto:af-boun...@afmug.com] On Behalf Of Bill Prince Sent: Saturday, February 10, 2018 11:13 PM To: af@afmug.com Subject: Re: [AFMUG] 24 GHz vs 11 GHz Our experience has been we get more throughput and more reliability from the AF11 than the B11. The B11s always seemed to be choking on high throughput. We gave up on them, and the AF11s are easier to license in congested areas anyway. bp <part15sbs{at}gmail{dot}com> On 2/10/2018 5:12 PM, Mathew Howard wrote: Yes, the AF11 can do more throughput on the same spectrum compared to the B11, but the B11 can use more spectrum (a lot more, granted), so it can do more throughput than the AF11 can. You can get close to a full gig in one direction with the B11 (assuming you can license enough spectrum), but you can only get around 650Mbps in one direction with the AF11 (it's a real full duplex radio though, so aggregate isn't that much different if you need a 50/50 split). On Sat, Feb 10, 2018 at 6:56 PM, Bill Prince <part15...@gmail.com<mailto:part15...@gmail.com>> wrote: What others have said about distance. Short (up to 3 miles or so) 24 GHz. Medium (up to 8-9 miles) 18 GHz. Long (up to 20 miles) 11 GHz. Longest 6 GHz. I disagree with the B11 versus AF11. The AF11 will provide more throughput on less spectrum. Probably less expensive too. bp <part15sbs{at}gmail{dot}com> On 2/10/2018 2:57 PM, David Coudron wrote: 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 3. Little less susceptible to rain fade � Cons: 1. Have to mess around with the license and there is a cost associated with it 2. Have to buy the dish separately, and know which to use before applying for the license 3. Not quite as much throughput (when compared to the AF 24 HD) 4. 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 2. No messing around with licenses, making it much quicker to deploy 3. 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 3. 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. 2. 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. 3. 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 �
