5Km Fiber Transfert

RouterOS Wireless Networking
1

Hello everybody.

I’ve a question.

I would like to know if this transfer is possible in this mode, for transfer Fiber Optic Connection 300Mbps at 5Km.

I wold to use:
3) - Mikrotik SFP Module
2) - RB 922UAGS
2) - Mikrotik mANT 30 + sma cable

    • RB 3011

I would like to use RB3011 to connect PPPOE client direct in SFP, and use the eth cable only for power the RB922.

Do you think it’s work this?

Thanks
FIBER.png

2

Looks fine, but I doubt you’ll be able to pass 300Mbps TCP unless you have mint spectrum, and even then, I’ll aim for 200Mbps+.

Have you done a spectrum scan at both places?

Tips:

  • If you want to maximize throughput, invest on additional Sleeve30’s for the mANT30’s.
  • mANT30 are very directional, getting the mANT30-PA (Precision Adjustment) is advised.
3

Thanks for replay.

No, I don’t have do a spectrum scan in a pleace now.

I’m considering whether to make this investment to bring Fiber to my office and resell bandwidth to some customers.
I would like to become Wisp, but first to evaluate if I could get enough bandwidth.
Anyway, it was a curiosity I liked to take away

Thanks for all the advice

Stefano from Italy

4

Do a spectrum scan in 5GHz, and post it here… That will provide you the information to determine if your plan is feasible.

You selected the best radios and antennas, but nothing prevents you from buying suitable, but lower priced equipment to test, see PTP Selection Guide.

A pair of DISC Lite 5 or LHG5 will do so that you can test for yourself how does it perform in your scenario; on the best conditions you’ll pass 100Mbps TCP fine.

You’ll be able also to do spectral scans to assess the suitability for AC equipment if spectrum has enough free contiguous space, 40MHz being the minimum I’d resort to more expensive AC radios and antennas, and 80MHz contiguous free spectrum being the best possible situation.

5

I actually use a bridge with two Mikrotik QRT for extend my LAN at 800mt and a bridge with two Sextant for my work office. at 500mt

With QRT i use 80Mhz channel and i’ve a good throughput… In this radio i use 4 VLAN, actually one for trasfer H264 HD video signal with HDBit module at 22Mbps, one for another HDBit ( in future), one for LAN and one for Guest network.

This is the scan with QRT, but is in another direction angle of the “Fiber Optic” transfer.
scan_1.png

6

Ok so you already have experience setting PTPs.

To put it clearly, exceeding 200Mbps TCP on the fiber PTP will depend on the amount of contiguous spectrum.

Using mANT30-PA + Sleeve30 will guarantee an optimal isolation from nearby signals in order to get the best SNR possible in order to be able to negotiate the higher modulations.

If there’s 40MHz contiguous available you’ll be able to reach 200Mbps; if there’s 80MHz then you’ll be able to exceed 200Mbps.

Have yet to find that IRL on any cities, you’re really lucky! how much does that QRT AC at 80MHz pass?

To do an spectral analisys, (Routerboard radio should be N, like in the sextants, or QRT N), open a new terminal and issue

/interface wireless spectral-history range=5ghz 0

Post a screenshot…

7

Thankyou so mutch.

Have yet to find that IRL on any cities, you’re really lucky! how much does that QRT AC at 80MHz pass?

Sorry, i don’t understand…

I’ve Set QRT Radio in N chanel, but I receive this message:

failure: this device can not do spectral scan

Thanks

8

I meant I never have found 80MHz contiguos spectrum yet on any city. You’re really lucky.

I asked what is the throughtput of those QRTs AC linked at 80MHz, have you measured it?.

You need a N device for spectral-history to work, setting an AC device to N mode won’t work, because the limitation is in the radio chipset itself.

In other words, QRT N will work, QRT AC won’t for spectral-history.