I just deployed an RB532a w/ 2 Ubiquiti XR2 Cards... Radio was very unstable when I turned the TX Power Levels to the Levels indicated on Ubiquiti's Data Sheet of 28dbm.. Once i returned these settings to DEFAULT in MKTIK Wireless TX Power Settings the issue seems to be resolved, radio has returned to a stable condition.. I was using the 2.9.38 firmware.. I upgraded to 2.9.45. I am a little concerned on trying to return the radio TX Powers to 28dbm as the radio continuously reboots itself and it's very difficult to access it and change power settings. Does anyone know if the later firmware fixed this issue? I would like to get the full potential out of the XR2 cards.. I don't believe I am with them set at the default level? Is there a known issue with 2- XR2 cards on a Routerboard? I knew there was an issue with 2- Senao cards on the same board but never heard of this being an issue with Ubnt.. I am using a 48V power supply on approx 90-100 feet POE run.

To run the XR2 cards at full power (28dBm) leave them at default. Please read http://www.ubnt.com/downloads/SRXR_power_offset.pdf for more information about the tx power offset.

You will damage the cards by setting the tx power higher than 18 when using a XR2/5 with Mikrotik 2.9.xx.

-Gerard

Got it.. thanks.. Is there any way to tell if the cards have been damaged.. I have a couple others that i have been running at 28dbm for quite some time now.. Can I tell if they have been damaged?