Yeah... a 6 mile 24ghz link would probably work, but it's going to be dropping pretty much every time it rains... and I'd be kind of surprised if you could even get airfiber 24s to link at 10 miles. Interference isn't really something you typically have to worry about on 24ghz, even though it's unlicensed, but even if will work at those distances, you aren't going to be happy with it in the long run.
You can get 1.2Gbps aggregate out of any of those radios, depending on the trafiic split... AF24 will only do a bit over 700Mbps each direction, but it is full duplex, so it can do about 1.5Gbps aggregate, AF24HD can theoretically do 1Gbps full duplex for 2Gbps aggregate (although I suspect you wouldn't get full modulation at 6 miles), and the B11 is probably capable of right around 1.2Gbps aggregate (maybe even a bit more)... unlike the others, it's a half duplex radio, but it can get pretty close to 1Gbps in one direction (but not both directions at once). On Sat, Feb 10, 2018 at 6:13 PM, Faisal Imtiaz <fai...@snappytelecom.net> wrote: > 11Ghz .... 6-10 miles > 24GZ good for 1-2miles in high rain fade areas, longer distance if you > have backup and don't care about rain fade. > > >>>For 11 GHz, we would likely stay with the Mimosa product line .... > Not a bad decision, depending on channel availability don't chalk off the > AF11x...smaller channels AF11x pushes more bw. > > >>For 24 GHz we’d likely go with the Ubiquiti AF 24 or AF 24 HD. > Cannot go wrong with these.... but ......... if you like the orange > logo.... Wait for it... Wait for it .... not too far out ...... !.........;) > > Regards > > Faisal Imtiaz > Snappy Internet & Telecom > http://www.snappytelecom.net > > Tel: 305 663 5518 x 232 <(305)%20663-5518> > > Help-desk: (305)663-5518 <(305)%20663-5518> Option 2 or Email: > supp...@snappytelecom.net > > ------------------------------ > > *From: *"David Coudron" <david.coud...@advantenon.com> > *To: *af@afmug.com > *Sent: *Saturday, February 10, 2018 5:57:40 PM > > *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 > 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 > > > >
