using RB711 for a long range link

hello friends,

can i get your valuable inputs on the following:

can i use the RB711 for a 10kms link with a 24dbi Grid to attain 10-40 mbps?

-sid

I would suggest you looking for the 32dbi solid parabolic antenna to have very good signal and throughput.

you may can look for the http://www.lanbowan.com, they parabolic antenna is great.

I do believe you can. In fact everything depends on your situation: cleanness of the air, antenna hight, line of sight and so on.. In my personal experience I was able to improve my 5km link by placing RB711 with 23dB panel antenna. My link is quite complicated, there are few trees in the way, both antennas aren’t placed very high and the terrain between them is quite flat. I think fresnel zone is not fulfilled as it should be. I’m using ordinary 11a mode and max throughput stays about 30mbps all the time. Simple FTP download hits 3.5mb/sec.

I’ve got two R52H and 29dBi grids running almost the same distance. Even with some fresnel problems, my signal is in the -50s.

You should be fine. Even with 24dBi antenna you’d be either right on target or possibly a little too hot of a signal.

I wouldn’t go with any smaller antenna than 24, but in hindsight, I wish I had used 26dBi on my shot. That 29dBi grid is big when you’re up there.

Hi Oldman…
if you able to get the 29dbi solid parabolic antenna, you will see the different and the size will smaller than the 29dbi grid antenna.

we just replaced one on monday.

have you guys heard about Cyberbajt? ( www.cyberbajt )

they have range of antennas. any idea about their performance?

I quite interest on the SD 5-28HV Dual CS…
you may can purchase it and try how was it?

especially it say the working frequency range from 4.9Ghz to 6.2Ghz.
Wish to heard you feedback and how’s the costing for it.

Wind loading is also higher on solid parabolic than a grid.

Not a big deal, but sometimes it makes a difference.

RB711 comes with Level3

is it possible to upgrade RB711 to Level4?

Level4 costs 45$, almost the same as the whole device. Soon we will have a model for AP, with preinstalled L4.

For point to point link you don’t need L4 license. Your modes should be Bridge and Station

Normis…
as what we understand, each 100Mhz cpu speed will increase 10+ Mbps bandwidth.
do you have plan to give it at least 680Mhz cpu speed?

:laughing: :laughing: :laughing:
80mbps with an RB411. Maybe it has 800mhz

Hi dude…
you talking about half duplex or full duplex?
is you prove it with tcp test?

Here is my test result for RB711, it is in indoor area, and all the tests are in TCP.

Single Nstream (20MHz), Full Duplex:

Single Nstream (20MHz), Half Duplex:

NV2 (20MHz), Full Duplex:

NV2 (20MHz), Half Duplex:

omg almost 120mbps and no 1200Mhz CPU… :laughing:

wow…

Great result man…
the CPU utilization also big different..

as what we test with RB433 or RB433AH, when doing the TCP test, it will stick on the 100%.
can you show the bandtest tools in the same windows as well?

really appreciate for you sharing for me to decided which model i should order in the next…

this is what i want to achieve.

1.> heavy urban area.
2.> los only if taken to 40mtrs above the 4 storey building
3.> lot of mobile towers and other ISP systems working around.
4.> need atleast 40-50 mbps in bridging mode (PTP)
link01.png
link02.png

the test is using JPerf (http://code.google.com/p/xjperf/) and I tested them from a notebook to another notebook.

hi dude…
would you mind to share with me about u configuration.
i just need a sup.rtf file from you and i can read it from my tools..

Thanks in advance… :slight_smile:
cheers..

do you have photographs of the site/location?

would be interested in seeing those. i am facing a similar situation.