Wifiwave2 - txpower + intended channel

RouterOS Wireless Networking
1

I am using RB4011 with wifiwave2 package.

  1. How to set fixed outdoor channel? When I set Frequency to 5500-5700 in Wireless tab then it dissapear after a few moments. After a couple of hours then I see "changed intended channel to 5280/ac/eeeeeCee. Maxium tx-power for outdoor channels (5500-5700) is 30dbm, for indoor channels (5120-5320) is only 20dbm. Why system keep changing my channel?

  2. How to set or check actual tx-power with wifiwave2 driver?

  3. Is it possible to disable DFS on wifiwave2?