Settings for a robust link of 20 km

[tonymobile]

Hi, i have a problem with a my user to 20 km of link.
Here I give you the voip and I am having problems of instability signal. What setting should I use to ensure maximum signal strength on PS5?

Thanks.

[WHT]

Is it a point to point link or AP to clients? What radios do you have at both ends? Do you have any omni AP and direction client radio?

[tonymobile]

Is it a point to point link or AP to clients? What radios do you have at both ends? Do you have any omni AP and direction client radio?

No, it is PtoMP to Client. Multipoint is Sectorial 17 db with radio enclosure RB 433AH and XR5. The multipoint is on a Tower with a important power wattage of National Networks.
(10Kw)

Is possible to solve???


Thanks.

[WHT]

10 KW National Networks...I assume that is a 10 KW FM radio station. As long as you're at lest a hundred feet under their antenna array, you won't have any problems. Granted they are around 100 MHz and you are at 2,400 MHz...10 KW has a nasty habit of overloading receiver front-ends.

When you say "stability" and "VoIP"...is it a signal strength problem, a QoS problem, or other wireless interference problems?

Can you describe what you are experiencing?

[tonymobile]

10 KW National Networks...I assume that is a 10 KW FM radio station. As long as you're at lest a hundred feet under their antenna array, you won't have any problems. Granted they are around 100 MHz and you are at 2,400 MHz...10 KW has a nasty habit of overloading receiver front-ends.

When you say "stability" and "VoIP"...is it a signal strength problem, a QoS problem, or other wireless interference problems?

Can you describe what you are experiencing?

10KW radio station 88-108 MHZ.
I have connections and disconnections continue to all clients both on the RB. after 20 or 30 minutes.

[WHT]

Next step....what's the history?

Has there always been a problem? If so, its an initial set up or installation problem.

Did is just start happening? Then something has changed.

[tonymobile]

Next step....what's the history?

Has there always been a problem? If so, its an initial set up or installation problem.

Did is just start happening? Then something has changed.

This is a initial installation and i haved problem on Lan cable but now solved with short cable lan from Parabolic Bridge to AP.

Now i must to solve on Wlan!

http://www.irpinianetcom.it/foto/montevergine.jpg
http://www.irpinianetcom.it/foto/montevergine2.jpg

Thanks.

[WHT]

Was you LAN cable feeding the radio between the PoE injector and the radio more than 150 or 200 feet? Try an 18 volt power supply.

[tonymobile]

Was you LAN cable feeding the radio between the PoE injector and the radio more than 150 or 200 feet? Try an 18 volt power supply.

My Cable Lan from PoE to RB Now is 20 meter with 24Volt Power Supply.

[bgoksel]

Check grounding cable and voltage.Could be a grounding issue..

[rconaway]

I read the posts but I'm a little confused. Are you trying to hit a sector 5.8GHz antenna at 20Km with a PS5-22V?

[WHT]

Something isn't making sense...lets review what we know so far. I'm making some assumptions, please correct me if necessary.

Its a new installation (I assume its a new access point installation). - That means the trouble shooting has to center on the initial installation.

To put it in perspective...
My phone doesn't work!
Did it ever work in the past?
No, I just moved into this office.
* THAT is an installation issue. It may not be programmed, not cross connected in the telephone closet, or wall jack may not be wired.

My phone doesn't work!
Did it ever work in the past?
Yes, but it stopped working after I spilled coffee on it.
* THAT is an repair issue. I know it was programmed and cross-connected, so I'm not going to pursue that trouble shooting route.

The AP is a Mikrotik RB/433AH Routerboard with a UBNT XR5 radio module. - Thats a known working combination other people use, that rules that out.

PoE cable is 20 meters at 24 volts. - A new cable and power supply didn't fix it, that rules that out.

AP has a sector antenna on a 10 KW 88-108 MHz radio station. - I'm going to say there may not be a problem with the radio, pigtail, or antenna, because the problem usually wouldn't be cyclic - it would be inconsistent, or more often or all the time.

Its a 20 Km link. - I assume that some clients are closer in, so I don't think you have a distance issue at this point, that rules that out.

All the clients experience disconnection and reconnection after 20 to 30 minutes. - I would try defaulting the AP and a few of the clients to get back to a known starting point. See if the problem is still there. If it clears up, its a configuration issue. If it doesn't, its an installation issue.

Not stable with VoIP. - I don't think that a relevant issue at this point as the core issue is all the clients are having connection problems in the first place.

[tonymobile]

Something isn't making sense...lets review what we know so far. I'm making some assumptions, please correct me if necessary.

Its a new installation (I assume its a new access point installation). - That means the trouble shooting has to center on the initial installation.

To put it in perspective...
My phone doesn't work!
Did it ever work in the past?
No, I just moved into this office.
* THAT is an installation issue. It may not be programmed, not cross connected in the telephone closet, or wall jack may not be wired.

My phone doesn't work!
Did it ever work in the past?
Yes, but it stopped working after I spilled coffee on it.
* THAT is an repair issue. I know it was programmed and cross-connected, so I'm not going to pursue that trouble shooting route.

The AP is a Mikrotik RB/433AH Routerboard with a UBNT XR5 radio module. - Thats a known working combination other people use, that rules that out.

PoE cable is 20 meters at 24 volts. - A new cable and power supply didn't fix it, that rules that out.

AP has a sector antenna on a 10 KW 88-108 MHz radio station. - I'm going to say there may not be a problem with the radio, pigtail, or antenna, because the problem usually wouldn't be cyclic - it would be inconsistent, or more often or all the time.

Its a 20 Km link. - I assume that some clients are closer in, so I don't think you have a distance issue at this point, that rules that out.

All the clients experience disconnection and reconnection after 20 to 30 minutes. - I would try defaulting the AP and a few of the clients to get back to a known starting point. See if the problem is still there. If it clears up, its a configuration issue. If it doesn't, its an installation issue.

Not stable with VoIP. - I don't think that a relevant issue at this point as the core issue is all the clients are having connection problems in the first place.


Hello to all, to write more clearly.

I installed on a pole some access point with atenne sectoral 90 degrees at 5 GHz with radio mtik RB 433AH and modules MiniPCI ubiquity XR5 (see photo above).

Initially I had many problems on LAN UTP cables unshielded. Later I shortened them and I have solved the many ping timeout.

I realized that I also disconnects hours on the wireless. I have several users at about 20 km with the ubiquity PS5 and every 20 minutes, all same time you disconnect. I think it is a problem of interference on the access point since the high powers that we are on the trellis.

Unfortunately I have a user who uses the voip and I'm 'bringing the inconvenience.

Kindly ask for help stabilize the most of my access point.

Excuse me for my poor english.

Thank you.


Tony.

[rconaway]

I can't believe you even made a connection, let alone have a stable connection. It's too far.

[cameron]

Could it be a watchdog running on the AP? and roughly every 20 mins when it can't ping a certain IP it reboots the unit? dropping all client connections?

[tonymobile]

Could it be a watchdog running on the AP? and roughly every 20 mins when it can't ping a certain IP it reboots the unit? dropping all client connections?

Yes, the wacthdog is active but ping from lan to lan of other Ap or Bridge!!!
Constantly monitors my AP and I see that there is no reboot.

But if change cable lan with FTP ??? It is possible that wireless cards are in tilt for cable fault lan unshielded?

[WHT]

I realized that I also disconnects hours on the wireless.

I have several users at about 20 km with the ubiquity PS5 and every 20 minutes, all same time you disconnect.

Are these two different problems? As in a several hours of disconnect, or every 20 minutes they disconnect for a few minutes, or after 20 minutes the 20 Km clients disconnect for several hours, or they ALL disconnect every 20 minutes for several hours?

Do all the clients or just the ones far out disconnect?

Are those clients in the same area?

[UBNT-Mike.Ford]

Hello Tony,

What version of the firmware are you running?

Thanks,

Mike