37Km Backhaul link with 29Db Jirous Dual-polarized parabolic

WHOA! How did you get that 3d persepective view in RadioMobile? I use that every day and have never seen that! NICE!

I can see now from 3d graph - 10/20 Kms test cannot be done unless you use a boat or go straight across the bay,

Let us know how the Xr5 compare to the R5h,

Also i use nstreame and i find it good and a lot of positives by other posters on the forum using ptp links,

And as you are transmitting over water, perhaps a read of this topic might be of interest ?
http://forum.mikrotik.com/t/automatically-change-frequencies-to-compensate-for-weather/28267/1

must call down, ky is a lovely county on a good day,


n21roadie

Hi Just click on Picture properties (14th icon from the left ) then 3D on the right .Like all things in RM took me a while to figure it out.

I have a boat but the rocking might cause a bit of multipath :-0.
Thanks for the link ill check it out.
Don’t come wearing the Lim colors you might be tied to a 100Meter mast.

My network names keep ending up in the sky on the 3d picture. How do i make that work like yours, where the link line is actually where the signal is going, not a mile above the land?

Do you mind posting the settings you used in the 3d picture window so I can try to duplicate your nice one, mine keeps looking funny/

Thank you!

Try this to see if it helps.
Net2.jpg

Don’t come wearing the Lim colors you might be tied to a 100Meter mast.

what can i say - so close and yet so far ?

Looking at your 3d map, not sure if this revelant but i noticed the rx sensitivity 0.75uv / -109.5dbm ?
thought radio cards went down to -95 +/- , and not -109.5, also the tx power of r5h @54 is 20dbm, sensitivity -82dbm @54,i would also allow 2db cable/line loss,

Hello, I have a similar setup, 40 chilometers, but with XR5 in turbo mode frequency.
With the H-POL I have 40 Mbit of TCP (one-way) troughtput.
With the V-POL I have 30 Mbit of TCP (one-way) troughtput.
The antenna is the same, but I have 4 XR5 running in 4 RB411AH and balanced with OSPF.
100% ccq over the H-POL and 90-95% over the V-POL.

Along with Xr5 and turbo,is nstreame used, what frequencies used ( you are using 5180-5745 ),
Have you tried reducing the frequency spacing as the antenna bandwidth spec is quoted 5.4-5.7?
What was the signal levels at 5180 and at 5745.


I don’t use radio mobile - can you send on link to download , I use http://www.ligowave.com/linkcalc/
just register free to use, i must compare both,


n21roadie

R52HN.jpg

With the R52HN cards throughput up but ccq is down, I believe to date MK 802.11n has/had issues ?
http://forum.mikrotik.com/t/802-11n/28753/1

Not sure if this still is a issue but either way i would stick with a setup known to work like 802.11a turbo, nstreame, adaptive noise immunity, reduce data rates to improve ccq, until n is sorted out, I try to install a tested working equipment configured and ready for install on a hill,

At a guess was the client -76dbm the 5180, and -62 the 5700, if yes antenna gain

A possible option is to have one polarity using r52hn cards and the other polarity XR5 cards, and it follows one polarity N std and the other A-turbo, ??


Thanks for the link

n21roadie

Thanks for the link for the R52HN i managed to get the link even better form a few tips on there.

(A possible option is to have one polarity using r52hn cards and the other polarity XR5 cards, and it follows one polarity N std and the other A-turbo, ??)

Reason we went for the R52HN was there were no XR5 available at the time i have some XR5 now :slight_smile: so i can try as you suggest on the link that is easy to get at.

(At a guess was the client -76dbm the 5180, and -62 the 5700)

Yes

Thanks for the advice etc i appreciate it.

(At a guess was the client -76dbm the 5180, and -62 the 5700)

Yes

Ok - you have a swing of 14dbm on the link using those frequencies which illustrates to me the importance of having full spectrum antenna’s, it will be interesting how both frequencies will handle the fade margins and which would drop first during bad weather,(snow,Ice),

I must call down to compare notes, pity no PM here, so email n21roadie[at]hotmail[dot]com,