KEKSOV2013-08-19 09:13:24
KEKSOV, 2013-08-19 09:13:24

Aiming two NanoBridges without eye contact

I bought a M5-22 subject to bridge between two buildings. The first building is higher than the trees, and the second is a little lower - there is no visual contact. Distance 850 meters. Please share your experience of pointing antennas at each other. What kind of laser pointer can I use, will its beam be visible during the day?


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4 answer(s)
DAzgluk, 2013-08-19

A laser pointer is definitely not worth it, even if it is visible, God forbid blind a colleague from the other side.
In fact, NBs have a fairly wide beam, and unlike relays, they do not require fine tuning (~7 degrees beam).
Just adjust by eye to catch at least some signal, then reduce the transmitter power so that the signal is about -65 -70, then tools-> align antenna and achieve maximum signals, you can also use the LEDs on the bridge itself for indication.
Another thing is that for 5Ghz, trees will be quite strong interference, it’s better to try to raise the second point above the trees with a mast or pipe, or pick up a chainsaw :-D
In general, these problems are discussed in great detail at NAG , experienced people are sitting there :)

TipTop, 2013-08-19

On Yandex.maps, connect two points with a straight line, select a satellite view and maximum magnification. There will most likely be a landmark on the line by which you can tune the antenna. Further adjustment is carried out according to the network indicators, as far as I remember, ubiquity has special software for this. I set up the segment-parabolic ASP-27 in this way for 2.3 km, the connection is normal.

Valentine, 2013-08-19

We have binoculars and a laser pointer. But Nanobridge has a cool feature in the firmware - you can watch the workload of the air in the browser.
They are quite easy to set up, they still have a radiation pattern not so narrow. We didn't even use any equipment for them. All these pointers and binoculars are more needed for high-frequency radio relays. The main thing is that the farthest point from the administrator is hooked, this can be seen by the light bulbs. And then one on the computer looks at the characteristics of the installed line, and the other on the spot regulates its physical position.

Ilya Evseev, 2013-08-19

A tricky but relatively effective way:
1) catch a signal and establish a connection at any speed,
2) start copying (FTP + TotalCommander) a hefty file via a radio channel,
3) slightly change the orientation of the antenna and watch how the transmission speed changes.

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