Hy all.
On 16-06-2007, we (CISAR, a radioHAM italian association) have realized a 304km link (about 100km ground and 200km sea surface), between Amiata mount (1734asl) and Limbara mount (1300 ca asl).
We utilized a pair of wrap board (but they will be replaced by a new RB532 soon), a pair of Ubiquiti XR5, and a pair of handmade antenna (120cm satellite dish for the surface, and a bronze ball-bearing extracted from a bus).
The signal received on both end was from -58dBm to -62dBm, bitrate between 12 and 48Mbps, CCQ between 70 and 100.







IW5CGM and IK0TCL on Amiata mountain



Me (IZ3HAD) on Amiata Mountain



IK0PCJ and IK0YUK on Limbara site.



IW0UIF on Limbara Mountain



The feed (we used the feed on the left)

On the moment i'm writing, this seems to be a distance world record (the precedent was from "Politecnico di Torino" on Italy, 295km).
The people which partecipate on this WR:

Amiata Mount
- Giuseppe IW5CGM (CISAR president);
- Antonello IK0TCL
- Mirco IZ3HAD (me)

Limbara Mount
- Natale IW0UIF
- Paolo IK0PCJ (antenna's constructor)
- Mauro IK0YUK

73 de IZ3HAD, Mirco

Too cool! One way to get EchoLink to that remote repeater.

73, de N4HHA

Wow thats Respect to you guys! kepp posting about the transfer rate in TCP mode.
And pleas tell me about the Feeder used in this setup.

//Rickard

@GotNet (or N4HHA): this is the natural evolution of the old FM repeater, no more echolink needed, hi!

@rickard: TCP band, on a bandwidth of 5MHz, was about 5Mbps. The most important thing was the latency: it was between 8 and 20ms. We tested it with the routerboard onboard b-test from one of the two site.
I'm sorry, but i can't provide a real traffic data speed (PC-PC), becouse, on Amiata's mountain, there was a loooot of radio frequency (3 FM repeater @ 6kw - 3 x 2kw - at 3m that pointed us), and we can't made a succesfully connection between the board and a pc (the board was only 10m from the pc!).
The link was dismantled at the end of the day, and it will be reran on the end of August (we will have a permanent authorization for that date).

EDIT: I posted some photo of the feed on the first post of this thread.

Truly Respect. Good High Points!

Well Done!

Mitici !!!! Concedetemi....un punto per noi italiani

Wow, this is great! unfortunately, you missed the opportunity of worl record by a few days:
http://news.com.com/8301-10784_3-973070 ... 47-1_3-0-5

Wow, this is great! unfortunately, you missed the opportunity of worl record by a few days:
http://news.com.com/8301-10784_3-973070 ... 47-1_3-0-5

OMG!!!
Last time we made a record (261,1km, it was only an italian record) we was "defeated" only 3 days after by a 295km link.
We are very unlucky....
Next time we will look for a 1000km link to be sure that our record will not beated as soon as this two times!

wow its a great job...in indonesia we said this..."EDAN TENAN"....salute...

Hy all.

On the moment i'm writing, this seems to be a distance world record (the precedent was from "Politecnico di Torino" on Italy, 295km).

http://findarticles.com/p/articles/mi_m ... _100231044
http://www.newswireless.net/index.cfm/article/1146

Bye
Cuccio

http://findarticles.com/p/articles/mi_m ... _100231044
http://www.newswireless.net/index.cfm/article/1146

Bye
Cuccio

They have 6W amps, a stratospheric balloon 30km high, 2.4 meters dish antenna controlled by automatic tracking system using GPS, The Swedish Space Corp. partnership, 3k€ or more equipment (only motherboard + radio card, of course), 2,4GHz. 310km.

We have: NO amps (600mW card lowered then to 10mW), 1700m asl one site and 1300m asl the other site, 120cm dish antenna with self-made feed controlled by...my (and my friend) hands , NO partnership, 300€ or less (total) equipment (motherboard + radio card + pigtail + case....of course), 5,7GHz (more fading, more dispersion, more free space loss). 304km.

Ok, you are right, THEY have the records (on 2,4GHz, of course), but...can you compare this two situations (for 6km difference)?

Wow, this is great! unfortunately, you missed the opportunity of worl record by a few days:
http://news.com.com/8301-10784_3-973070 ... 47-1_3-0-5

Theyr link is @2,4GHz, our link is @5,7GHz. We maintain a little consolation....

Still great - maybe a little EME now?

N4HHA-R Node 44310 Orlando 443.100+ 103.5 5.8 GHz

Good Work. Amazing the signal and throughput.

Maxi - LU2PCJ

Great work, how much uptime do you have, is it stable? world records on such links (over water) should be in uptime, not km.

This was only a test link, which will be reinstalled as a fixed link on late August 2007, but we have test it for about 3-4 hour, and it was rock-solid.
More details when we will rebuild that link on, as i wrote above, late August 2007.

I guess without space diversity it will be not very stable.

----
oh, my good
great and congratulation ... ..

regards
Hasbullah.com
----

http://findarticles.com/p/articles/mi_m ... _100231044
http://www.newswireless.net/index.cfm/article/1146

Bye
Cuccio

They have 6W amps, a stratospheric balloon 30km high, 2.4 meters dish antenna controlled by automatic tracking system using GPS, The Swedish Space Corp. partnership, 3k€ or more equipment (only motherboard + radio card, of course), 2,4GHz. 310km.

We have: NO amps (600mW card lowered then to 10mW), 1700m asl one site and 1300m asl the other site, 120cm dish antenna with self-made feed controlled by...my (and my friend) hands , NO partnership, 300€ or less (total) equipment (motherboard + radio card + pigtail + case....of course), 5,7GHz (more fading, more dispersion, more free space loss). 304km.

Ok, you are right, THEY have the records (on 2,4GHz, of course), but...can you compare this two situations (for 6km difference)?

kudos guys...
is there any chance you would post some blueprints or instructions to build a similar dish from?

Gr8 work Mirco!.
I'm also in Italy, but at Como.
Did u do test 4 your real throughput in a Full-Dúplex (I ask u because I'm a WISP and I use MTK and other products).

Thanks and excellent!.

is there any chance you would post some blueprints or instructions to build a similar dish from?

Hy.
I will ask to the feed constructor if he can give me all the interesting measure.
The antenna was made by a 120cm satellite dish (prime focus) and a hand made feed (simple dipole on a waveguide enclosure, as you can see on my last photo).

Did u do test 4 your real throughput in a Full-Dúplex (I ask u because I'm a WISP and I use MTK and other products).

Hy friend, thanks for your congratulations!
I'm sorry, but i'm unable to answer to your question, becouse the link was dismantled on the same evening, and we can't do many test, becouse on one site we was unable to "talk" to the routerboard (many many many radiofrequency on that site!).
This link will be re-established on late August, and on that moment i will let you know ALL tech info.

Did u do test 4 your real throughput in a Full-Dúplex (I ask u because I'm a WISP and I use MTK and other products).

Hy friend, thanks for your congratulations!
I'm sorry, but i'm unable to answer to your question, becouse the link was dismantled on the same evening, and we can't do many test, becouse on one site we was unable to "talk" to the routerboard (many many many radiofrequency on that site!).
This link will be re-established on late August, and on that moment i will let you know ALL tech info.

Friend, i understand, I've same problem, that's because I'm using 10GHz links on Milan.

Regards.

Nice Job. Well done to the hard working team that did that.

Hats off to you.

They have 6W amps, a stratospheric balloon 30km high, 2.4 meters dish antenna controlled by automatic tracking system using GPS, The Swedish Space Corp. partnership, 3k€ or more equipment (only motherboard + radio card, of course), 2,4GHz. 310km.

We have: NO amps (600mW card lowered then to 10mW), 1700m asl one site and 1300m asl the other site, 120cm dish antenna with self-made feed controlled by...my (and my friend) hands , NO partnership, 300€ or less (total) equipment (motherboard + radio card + pigtail + case....of course), 5,7GHz (more fading, more dispersion, more free space loss). 304km.

Which btw also means that you were respecting the Italian power limits (even if i understand that you may user higher EIRP power than commercial WISP), while they were not.
You did a great job guys
Bye,
Ricky

Hello mipland,

Nice job and forget about Swedish.

Keeping posting.

regards,

E vai cosi !!!

Ottimo lavoro

Saluti

Marco

Hi Mipland,

if you want , we try a link to about 400km. We have a tower on Vesuvio and a lot of friends in CB ...


Bye

Marco

first of all congratulations on the job.

Want to know if you have used Nstreme protocol, can you please send comlpete details relating to this, like:
1. if you have used then what was your configuration at both ends,
2. if not then didnt you face ack-timeout issue for sucha long link

also, can you describe more about your antenna

regards

if you want , we try a link to about 400km. We have a tower on Vesuvio and a lot of friends in CB ...

Ciao Marco, we have too some tower on Vesuvio, but i'm unable (at the moment) to find a second site at 400 (or more) kilometers, becouse of the earth curvature.

first of all congratulations on the job.

Thanks!

Want to know if you have used Nstreme protocol, can you please send comlpete details relating to this, like:
1. if you have used then what was your configuration at both ends,

Yes, we used Nstreme, becouse without it, it's simply impossible (becouse of the ack timeout limit on Atheros firmware - ideally 61km max shoot -). We configured one end as ap bridge with static wds, and the other end as wds station with dynamic wds, 5MHz bandwidth, 5765MHz frequency.

2. if not then didnt you face ack-timeout issue for sucha long link

No ack timeout, look above.

also, can you describe more about your antenna

It's very simple:
- 1 x satellite dish prime focus;
- 1 x handmade waveguide (a sort of "cantenna") on the dish's focus.

Regards

hi mipland,

what kind of nstreme are you using single or dual ??

you didnt had to tune the antenna for 5ghz frequency ...

regards
MKSB

what kind of nstreme are you using single or dual ??

Single nstreme.

you didnt had to tune the antenna for 5ghz frequency ...

I don't understand what you are asking here...we (ik0pcj, Paolo) have realized only the feed, and then we have tested it with a SWR meter. We have compared on a short link with a 29dBi pac wireless grid, and we have 6/7dBi more (rx/tx) (so 35dBi total) than with the grid.

Congrats! Well done.
Its amazing @ 10mW!

73, de 8R1SR

can you give us a mikrotik print screen ?

can you give us a mikrotik print screen ?

No. I wrote on some post that this link was only a test link (it was active from 14:00 to 19:00 of one day). We will rebuild the link on late August or first of September, becouse we lack the necessary authorization.

Regards

The signal received on both end was from -58dBm to -62dBm.
Is this legal?

Yes, it's legal if we are physically at the site, becouse we are OM. On the moment we leaved the station, we have to lower the power to 10W EIRP, but this is not a problem now, becouse the link was down till the day we made it (we are waiting for necessary authorization).

Good job
i would like have more daitals about your link:
- The power of the used card (is it 600mW??)
- The gain of the antenna??
- Have you used Lowloss cables?? if yes witch cables are used (LMR 400?? or LMR900??) and how long are you cables??
- What about climatic conditions?? there was clouds, fogs ??

card used whats 600mW but it was underpowered to 10mW (you can read this in one of the top posts

- The power of the used card (is it 600mW??)

Janisk has already answer to this (thanks Janisk).

- The gain of the antenna??

35dBi estimated (120cm parabolic prime focus dish), as already wrote above.

- Have you used Lowloss cables?? if yes witch cables are used (LMR 400?? or LMR900??) and how long are you cables??

The cable was a semi-rigid coax cable, under 4mm diameter. It was long 50cm ca. You can see an example of that cable on this image:

- What about climatic conditions?? there was clouds, fogs ??

There wasn't a perfect climate condition. On our site it was cloud, but sunny on the other site. The path was a little foggy.

Hey Mipland,

Can you shoot me an email about this link you guys have. Thats an amazing distance! Mike@ubnt.com.

Thank you,

Mike
Ubiquiti Networks

here is some news about this link:
http://www.engadget.com/2007/08/27/worl ... 189-miles/

too bad it doesn't mention mikrotik nstreme is what made it possible

I will write here the answer to your mail normis.

Hy Normunds,
this news is an old news. You can see on your forum that
this link was made on 16th of June 2007, and at that time,
it has a lot of resonance. On that news (and on our
technical bullettins, downloadable from our site) we
specified the use of Mikrotik routerOS. Unfortunately, at
the time of the link, we didn't have any Routerboard, only
PCEngines WRAP. Next week we will re-establish that link
(probably with Routerboard), but this time it will be a
fixed installation (at the time of the link, we hasn't the
necessary authorization), and i will publish all the tech
detail on the same thread i started on June 2007 on your
forum. Then, if you want to made a sort of "pubblications"
(as Ubiquiti did), we will provide you all the necessary
info.

The news you are seeing is a sort of "partnership" (they
will provide us some testing hardware for free) between
CISAR and Ubiquiti, and it's from Ubiquiti's
commercial/publisher (but with our approvation). They have
seen the post on your forum 2 months later...

On EVERY our pubblications (except for that Ubiquiti's
pubblications), Mikrotik RouterOS is higly mentioned as
"fundamental firmware".

Regards, Mirco "IZ3HAD"

digg this guys: http://digg.com/tech_news/World_record_ ... _189_miles

digged!

hi mipland.. congrats for your link...
can you please give us some more detail about the antenna and feedhorn used ?

Also how did you do the alignment ? (via alignment mode in ROS ? )

Hello.
Did you put the permanent link on ? ( you said it would be late sept. this year. )

can you please give us some more detail about the antenna and feedhorn used ?

They are also on this thread.

Also how did you do the alignment ? (via alignment mode in ROS ? )

Sure.

Did you put the permanent link on ? ( you said it would be late sept. this year. )

Hy jorj, you are right. We tried to re-estabilis that link on the fist days of October, but we encounter some problem to re-establish it. We have still not re-establish it, becouse that site is very hard to reach (on this moment, there's a big quantity of snow there!).
I will write here when we will able to put it permanent.

It was 70F here today (30F tomorrow!), did you get it going yet? When is winter over there?

Very interested myself.

The longest working link is between Cyprus and lebanon which is up since 11 months at 284km ,all these trials are not links if they can not be up at least for 48 hours.And there no evidence that this link worked even , at least u can print screen when you got ur first connection, and using 1.2 m dish will get u one or 2 reply on this distance but will not get you a link you need over 2.8m Dish on your next try.

Regards,

any update?

great work guys! really quality stuff!

Mikrotik deserves some credit in any articles for sure.

"200km Distance of the sea surface ", How you are to build up The Wireless Relay Station?
use Height Balloon or Ship ?

"200km sea surface"? How you are to build up Wireless Electrics station? On the Sea...

???

Nice work!

73 de 9A3BSP!

First of all congratulations for this great job!!
The most impressive of all is that you used handmade feeders! it seems that they are simply PERFECT!
Would you mind giving us the key dimensions? the internal diameter, the total length, the length and the diameter of the cable inside (or did u use something else?) and finaly its distance from the bottom of the feeder.
I have tried to create feeders for the 5ghz band but without such results.

thanks

Congratulations on this great job ! As a ham radio operator, and builder of ATV repeaters, I know how hard it is on those frequences ! Very impressive ! Keep us updated on progress and please publish specs on antenna dish.
Thanks,
Earl
N8TV

First of all congratulations for this great job!!
The most impressive of all is that you used handmade feeders! it seems that they are simply PERFECT!
Would you mind giving us the key dimensions? the internal diameter, the total length, the length and the diameter of the cable inside (or did u use something else?) and finaly its distance from the bottom of the feeder.
I have tried to create feeders for the 5ghz band but without such results.

thanks

i guess you don't wanna tell us the feeder dimentions...

I did my speech in Oral Communications on this link last semester!

try this http://yu1aw.ba-karlsruhe.de/3d_corn_refl_feed.pdf

With wath tools Do you Points de Antenas ?
The GPS and what else
Thanks

WOW! That is just amazing! I am very much impressed.

mipland , congratulations , impresive distance, great job

First of all congratulations for this great job!!
The most impressive of all is that you used handmade feeders! it seems that they are simply PERFECT!
Would you mind giving us the key dimensions? the internal diameter, the total length, the length and the diameter of the cable inside (or did u use something else?) and finaly its distance from the bottom of the feeder.
I have tried to create feeders for the 5ghz band but without such results.

thanks

i guess you don't wanna tell us the feeder dimentions...

i have information about this type of can antenna ,and i have rebuild other's manufacturers antena feeders from 1 to 2 polarizations , work great and used in my real working network without any problems, it can be used in N standart or in Nstream2 configuration , i dont know how much isolation is betwen 2 emiters in db, then one radio is enabled (16db card,30cm pigtail and 1m s400 cable conected with N conectors),other card show -35 db ,but with N standart, 2.4km distance ,2 26db 2 polarization antenas i reached rate 70mbps in and 70mbps out in ful duplex ,i think is good results
there a lot of information about can antena :
http://www.h-online.com/features/Build- ... -/110278/0
i think its helpful for you and all

Congrat for the hardwork. it's amazing.

I have the same project. anyway, I want to build my own WISP somewhere in the philippines, I plan to cover all island in our place which Telco can't provide internet access.

here is my thread:
http://forum.mikrotik.com/viewtopic.php?f=7&t=34957


Thanks

nice link

i would really like to know what do you use to work out the LOS?

We would like to test a long range wifi link also, but some sites say the LOS is fine, others say the earth curve would not allow.

any help appreciated

I'd like to tip my hat to you guys, congratulations from a fellow UHF Ham

Adam KD6POC / K6KPH

It would be neat to attempt a 70000km+ link and get it working, even if for only a few seconds.
It would probably require a different radio and a amp though.

and a wireless freak on the moon. literally

and a wireless freak on the moon. literally

Oops sorry, when I posted I accidentally removed saying to try a moon bounce.

what is this link doing with new router os

and the uptime on of this link

and the config if possable

hi
are u able to help to build a link 270km for us?
we are looking for a link between cyprus and lebanon.
please advice if u can establish this link
sam

hi
are u able to help to build a link 270km for us?
we are looking for a link between cyprus and lebanon.
please advice if u can establish this link
sam

shoot me an email
yalmandogus [at] yahoo.com

this link is very very good
i have one question
Mikrotik RB912 help you score better bandwidth on this link?

Hi dear mipland


i have some question about this lik
please contact me :

mostafa.afus@gmail.com
+989153092801

Best regard

Hi Mipland,

That's a great & clever job. Congras!! So, could you please, post the images again. I'm experiencing the same issues (a long link a way to 200km) that I believe you can help me with details. Your post went forward through the Mikrotik Support Team (as a good achievement) after my ticket request about devices options to solve this issue. I appreciate any contact about that.

Cheers !!

Thor

Hy all.
On 16-06-2007, we (CISAR, a radioHAM italian association) have realized a 304km link (about 100km ground and 200km sea surface), between Amiata mount (1734asl) and Limbara mount (1300 ca asl).
We utilized a pair of wrap board (but they will be replaced by a new RB532 soon), a pair of Ubiquiti XR5, and a pair of handmade antenna (120cm satellite dish for the surface, and a bronze ball-bearing extracted from a bus).
The signal received on both end was from -58dBm to -62dBm, bitrate between 12 and 48Mbps, CCQ between 70 and 100.







IW5CGM and IK0TCL on Amiata mountain



Me (IZ3HAD) on Amiata Mountain



IK0PCJ and IK0YUK on Limbara site.



IW0UIF on Limbara Mountain



The feed (we used the feed on the left)

On the moment i'm writing, this seems to be a distance world record (the precedent was from "Politecnico di Torino" on Italy, 295km).
The people which partecipate on this WR:

Amiata Mount
- Giuseppe IW5CGM (CISAR president);
- Antonello IK0TCL
- Mirco IZ3HAD (me)

Limbara Mount
- Natale IW0UIF
- Paolo IK0PCJ (antenna's constructor)
- Mauro IK0YUK

73 de IZ3HAD, Mirco

if you want , we try a link to about 400km. We have a tower on Vesuvio and a lot of friends in CB ...

Ciao Marco, we have too some tower on Vesuvio, but i'm unable (at the moment) to find a second site at 400 (or more) kilometers, becouse of the earth curvature.

the summit of Etna should be within optical reach if not from Vesuvius perhaps from Mount Epomeo in Ischia

Try it

It's 344 km. I don't know if it's already been overcome. The route is almost entirely by sea. If Epomeo is low you could really try it from Vesuvius or from some mountain on the Sorrento Peninsula, such as Monte Cerreto which stands at 1,300 metres. Certainly the electromagnetic pollution on Monte Epomeo or Cerreto is not that of Limbara. I don't know about Etna.
I was also thinking about Etna-Limbara but I think that at that point the problem could really be the curvature of the earth (608 km).
However, a wave guide could form on the sea surface but I don't know if it is a sporadic phenomenon or occurs easily. Meanwhile, the world record would be broken.

Update: I'm wrong. Indeed, due to the curvature of the earth, it is not easy to go beyond 400 km unless you get very high on both sites, that is
at least 3000-4000 meters above sea level. I tried to do a kind of "simulation" with Google Earth for example between Monte Rosa and Monte Cinto (Corsica) (404 km) but this too would not be feasible due to the presence of a mountain range on the Ligurian coast which would block the view .
The one between Etna and Limbara would be completely impossible, given the distance and I hadn't considered it, unless the radiation is really channeled into a sort of wave guide but I suppose this happens a few meters from the water ....

It would be a good test....