6.5 Km point to point link

RouterOS Wireless Networking
1

Hi all

I need to establesh point to point wireless link with 6.5 Km in Baghdad/IRAQ , in both ends i have RB433 , R52H and Mikrotik Flat panel 20 db , my configuration is transparent bridged like this exampl in wiki : http://wiki.mikrotik.com/wiki/Transparently_Bridge_two_Networks

i have two towers at both ends first the AP , the twoers is placed on Building with 6 M hieght and the tower is 30M , i have install my fltapanal at 12 Meter " i.e. 18 M from the ground " , the other point is 19 Meter from the ground .

The Freq is 5GHz , i have tried another chanels and its didn’t help , i made atest with shorter distance " 900 meter and its was ok "

i have made fine tunning and the direction is 100% correct fof the LOS in both ends , but the problem that i can not have lock , can any one advice whats the wrong .. is there something with the configuration ? am i need more hieght ? any post may help is highly appreciated .





Thanks and Regards
point to point.JPG

2

Have u enable WDS/Bridge in ur AP. Perhaps ur client end has WDS enabled but AP end is not. If LOS is clear there should not be any issue.

3

“but the problem that i can not have lock” WHAT?? Be more specific!

4

brb .. i think its clear .. the wds-station keep searching but its not find the ap-bridge from the other end to be connected .


5

Thanks , yes the WDS-BRIDGE is enabled at both ends .


6

IF WDS bridge is enabled check for wds mode and the frequency channel u hav selected. It should be same for both sides to communicate.also the SSID

7

its same , i have test it with shorter link only 900 Meter .. same configuration and it was working fine .

i just make the flatpanel hiegher at the AP and install the other side then i didn’t able to lock the p2p link


8

what is the length of the pigtail cable from the radio to the antenna?

9

its only 30 cm .


10

If you able to let us remote login, it will help you very fast.

11

Your problem could be the pannel. It’s a sectorial antenna. You need an unidirectional antenna, a grid, something.

12

Thanks , can i send u the access details via email as the forum is public .


Thanks

13

as you plan

14

hi .. i have sent u both IPs for remote access on

bt.ang@mykris.net and cc to vincent_angbt@hotmail.com


i do appreciate your kind support


15

valypetre is correct. i missed it tht u had panel for both sides. u need a grid at both ends to sort it. 2-3 km link is good on panel . not beyond dat hence it wrk for u @ 900 mtr

16

the panel antennas (20 dbi) with r52h should be able to handle 6.5 kilometers very well even more use a link calculator

17

You may have a problem with 1 of the antennas… for 900m it is possible to see each other without antenna (cable only)
Try changing one of the antennas and then other.
I advice you to place more directional antennas (grid or dish.
That way you have more antenna gain and you can make really good results.
I have a 5km p2p link with 2x 60cm dishes and i reached 80mbits with 5ghz-N.
On 5ghz-turbo i reached 40mbits with a grid and 90cm dish on same distance.

You 100% have a hardware problem but even without it you will reach much less then it is possible with that equipment.

18

i have not measured throughput but am doing 2 links ptp 11 & 12 km with panel on the mikrotik side and grid using nanostation 5 on the remote side links very stable

19

I’ve got AP’s with 12-15dBi omni and CPE’s with 19dBi panels that pull over 10 miles (16km). I don’t think distance is an issue with two 20dBi panels.

I think I would start with one as AP bridge or just bridge, one as station, then once the link is up, then set the client as WDS Station. I have run into weird setups with Bridge to Bridge.

20

distance would depend a lot on ur landscape (may be u guys hv base stations located on hill tops etc.) and whr interference is not an issue. Est a 3-4 km link at 2.4 Ghz wld be extremely difficult if thr r multiple operators, atleast this is wht i hv exp.