Will This Link Work ? Need Your guide and advice

RouterOS Wireless Networking
1

Hello friends all around the fanatic mikrotik users,

Ok friends, straight to the point, my plan in turn, builds a wireless link with a distance of 40 km, it coordinates was data that I already :

Site CKND :
Latitude 6° 9’28.34"S
Lonngitude 106°20’15.47"E
Tower Height : 45 Meter [above ground] << existing tower

Site SMN
Latitude 6°10’1.68"S
Longitude 106°41’30.00"E
Tower Height : 39 Meter [above ground] << existing tower

Both devices that are used for all site
Wireless radio : Mikrotik RB433AH with XR5 wireless mini-pci
Antenna : 32 dbi solid dish antenna by Kenbotong [Model:TDJ-5158P9A]

Please give me guide and advice for this case, thanks and God Bless You ALL…
This capture my calculation from RADIO MOBILE and LIGOWAVE :
RADIOMOBILE Calculation.JPG
LIGOWAVE Calculation.JPG

2

From other calculation , UBNT AIRLINK :

UBNT AIRLINK calculation said the LINK will works, if minimum height tower both of site :
Tower height site SMN >> 54 meter
Tower height site cknd >> 55 meter

NEED GUIDE AND ADVICE …

this capture of UBNT AIRLINK Calculation :
UBNT AIRLINK Calculation.JPG

3

it works.
how much bw ?
nobody knows, you must try.
It depends a lot from the interferences you find in towers and the performances of antennas at the frequency you use.
the quality of antenna does not seems very high. invest more onit.
The first fresnel zone seems free.
At least tou must have 10Mbit, but only if you install you could evaluate this.
why not use mimo and a dual slant antenna ?

4

Many thanks rodolfo for your advice,but…, in this case if i calculate in UBNTAIRLINK with TRUE tower height of both tower existing, site CKND Tower height 45 mtr and site SMN Tower Height 39 mtr, that link calcution from UBNTAIRLINK it’s doesn’t works…, who’s the tools calculation can i trust..?? NEED your guide and advice more…many a lot of thanks guys..

This capture from UBNT AIRLINK :
true heigth tower calculation with ubnt airlink.JPG

5

By the looks of it, when you give them the correct details both tools tell you that it probably wont work too well unless you raise height.

6

Thanks jtroybailey for your advice, OK…and Your best advice is to increase the height of tower both how many minimum height of both towers must be added from existing tower height ??

7

How much bandwidth must you transport ?

8

TX 10 - 15 mbps and RX 10 - 15 mbps..

9

you could.
Better if you use a mimo system (you take advantage from multipath): a rb411 with a Ubiquiti SR71-15 radio and jirous29D antenna.

10

may be … if you use 5Mhz channel …
please post your results.


have you see my post about 50km ptp link?

http://forum.mikrotik.com/t/will-work-this-ptp-50km-link/47769/1

11

Thanks…anyway can you show me data of coordinate that sites has you linked succesfully…please in format DMS [degree, minute, second] i want to calculate your coordinate sites in my pc…

12

I note from the calculation predications pictures it has vertical polarity done and with this polarity you have freznel zone issues, but you could try horizontal polarity another consideration is with using a solid dish is windloading and the fact you will need a very strong structure to mount the dish



http://www.terabeam.com/support/calculations/fresnel-zone.php#meters

13

all the calculations are almost same i.e the fresnal zone is eaten up in all cases. to have a proper link you must increase the height