Netonix Forums

So basically we have this one area at the farthest part of our fiber network that would not have a way to get back if there was ever a fiber cut or a switch failure. The end is going to have a new tower this year and i was thinking of providing a wireless backhaul back to another tower in the ring incase there would ever be a cut or even if a switch failed so wireless and fiber customers would at least have something. The link that i am thinking about is a 5.6 mile link.

Any suggestions on an backhaul? I would say at most there would be about 300m that would be used. I would say probably a minimum of 100m should be available to keep people going till a replacement or fix was done. First thing I would think is af24 but the long link I have been told in the past would not be very good in rain. As far as 5.8 there will be other 5.8 on the tower so it may not be the best choice either. The other thought I had is to take an af5 and leave it at maybe 10 or 20mhz and if a problem would happen just adjust it then. Biggest thing is how should I choose based on a device that probably won't ever be used much if possibly at all.

I would use an AF24 HD possibly and understand that if a fiber cut happened in the rain I am probably screwed but the odds come into play here.

Or you could use an AF5X or a B5C using UNI-I band (5150-5250) and not mess up your tower.

The AF5X is on the ship somewhere, and the B5C is available at Streakwave.

With the B5C (connectorized) you could get about 400Mb at that distance using 2x40 MHz wide channels.

AF5 regular is going to require using a channel you might not want to as it is not certified to use the UNI-I band :(

Or licensed link 11GHz

I will look into the b5c but I am liking the idea even on the 5x and the lower band. The tower won't be up till June so that would hopefully be a good time when the 5x is more available.

If the tower won't be up til June, consider waiting just a bit. AF5X and B5-Lite should both be available by mid-may.

If you want to go cheap and available right now, PwerBeam-5AC-500 will do something like 140Mbps aggregate in 20Mhz right now.

rebelwireless wrote:If the tower won't be up til June, consider waiting just a bit. AF5X and B5-Lite should both be available by mid-may.

If you want to go cheap and available right now, PwerBeam-5AC-500 will do something like 140Mbps aggregate in 20Mhz right now.

Yea but the PowerBeam does not have UNI-I/II does it? - *hoping you come back and say YES*

Powerbeam does NOT have UNII-1 or 2 in it yet !

Last UBNT response was,

SOON !

I don't think ubnt knows what 'soon' means lol.

There are a number of mikrotik 802.11ac radios also, and to my knowledge no one is getting in trouble for using them yet and they will do 5150-5250.

rebelwireless wrote:...no one is getting in trouble for using them yet...

Ja, tell that to the judge...

lligetfa wrote:

rebelwireless wrote:...no one is getting in trouble for using them yet...

Ja, tell that to the judge...

Just to be clear on what the law is in the US, it's illegal to sell non-certified equipment, but not illegal to use it. It's illegal to violate the rules with any equipment, certified or not. so, if you have equipment that isn't certified *but* doesn't violate the rules, then you have nothing to worry about. I don't know if the mikrotik gear breaks the rules when output is set within EIRP limitations or not, but I suspect that *most* deployments do break the rules because 'tik lets you crank output to the sky.

All of 'tiks AC line is using the Atheros 988x which can be found in many consumer routers so I suspect power output is the only real concern, and a pole mounted radio is easier to field test for compliance by FCC or watchdog. I'd be much more worried about using 'tik radios because of possible import issues on integrated radio devices. The devices with a mini-pcie radio are unlikely to have any issues because Qualcomm had the individual radios certified and their is no added functionality on the mini-pcie card.

verdict, risk=low if you stay within EIRP limits.

I'm am not so sure about that? - LETS BE CLEAR ABOUT THIS, I AM NOT CLEAR ABOUT THIS!

It all depends on what is on the MicroTik documentation.

You can manufacture and sell "parts" to a wireless system that are not certified like an AMP or a Radio Card like the SR-71 but you must state that it has no certifications and it is the responsibility of the end user to certify their system.

It is then the responsibility of the user to certify their system before using it.

I am pretty sure you can not use equipment that is not certified but I could be wrong?

Where is WHT (Justin) when we have debates like this.