I’ve noticed this too with the SR2. It doesn’t seem to be affected by the antenna or cabling type.
The only thing I’ve noticed is that it seems worse on the higher channels (about 10 and up) and the latency often improves when the transmit power is set to about 23dBm.
do you put some bandwidth limitations there. problem we talking about is that if smb. start downloading, there is unstable behaviour of sr2 with other customers.
We have 4 towers with SR2 cards and Pac Wireless omni antennas. They are rock solid for us. One of them is in a very high noise environment. I would say though - that is you are in a high noise environment, the SR2 has great Rx specs, poor links on your part, will cause problems. BTW - We have had them up since the SR2 debuted - so we are nearing 2 years now.
well first of all i would like to know your enviroment if its crowded ornot coz the cards your testing have more rx gain then other cards in the market which will coz u more interference with an omni directional than any other card.But forsure we can tweak your link to have the best results ,just tell me how much data will be on the link,distance and signal level,
We had same issue. 1x sr5 for backhaul, 1x sr2 for client, RB532, MT 2.9.42. CPE= linksys wrt54gs and dd-wrt v23 sp2. Dropped client connection every 5-10 minutes. Tried every possible trick in the book, even bought 1watt amp but this made it worse. Finally tried opposite approach, instead of adding more power, reduced power on sr2 down to 17dbm, WELL HALLELUJAH !!!, have not dropped a client since. pointless using sr2 for power, might as well go back to cm9 or senao ext2. (b-only)
guys really the ubnt radios is uesless EXtremly uesless
ues amplifre with R52 i think it will be much better than power hangry cards
anyway i have an order of 25 AP but i refused to supply him with extremely high priced card + unstable at all its even higher price than Routerboard it self
even when i sent i a support mail to mikrotik they reply to me and said they are not the munfaturer for the card
one thing i want to know is it really work gr8 for you guys??
where is mike-ubnt he gone?
doesnt have a word on this?
why its good in indoor and extremely baaaad on outdoor?
I have been trying to recreate your issues, but have been unsuccessful at best.
I have many user’s who do not experience problems with XR2, SR2. I have testbeds set up over varying links that have had no issues.
Have you tried another XR2 or SR2 card or are you basing all analysis off of one card?
What brand of cables/antenna/enclosure are you using? What is the match of the antenna? Please if you can be specific about your setup I can better try and analyze what is going on.
Also, I do not frequent these baords often, I do apologize. I have been extremely busy as of late, so I do apologize for the delay in getting a response.
As always you can email me @ support@ubnt.com if it is an urgent matter.
I had the same problem with 2 differnet sr 2 cards, clients came back up for about a day then disconnect, I then have to disable and enable the card about 50 times then the clients started coming back, I even replaced the card with new one and same problem, then earthed the card to the tower, thought it might be static, but same problem, i even replaced the routerboard, same problem
I replaced the card with 8602, All problems gone all 60 clients registered and logged in within 2 minutes no prob, any ideas of what may cause this???
Taloot, you are probably overdriving your clients. You have posted many times in the past about similar issues and seem to run into a lot of problems because you are using too much antenna gain or too much power. Try a lower gain antenna and drop your power down some. The XR2 radios work very well for us with a manual power setting of 13dB (which appears to be 23dB). Bigger does not always mean Better.
Slight thread hijack *
So, Mikrotik or Ubiquiti, can one or both of you clear up what power settings are what when manually setting the power of a XR2 and SR2? It appears that a manual setting of 17dB on the XR2 is 27dB real power, but is 13dB manual actually 23dB? There is a 10dB difference when running /interface wireless monitor wlanX. Anyone care to clarify this?
this little screen shot from my ap, RB5xx+R52+Omni 15,4 dbi
