nichky
1
I found that some of the Wireless card doesn’t support “tx power mode=card rates”. 
- How can i know which carts supports which no?
- Just i need to decrease tx power, i’m avoiding “all-rates-fixed” because MikroTik doesn’t recommended to use it.
Thanks
mkx
2
If you want to decrease Tx power, then increase value of antenna-gain (and set country to your country).
nichky
3
yes i’m doing like that, So i need answer on my questions. Did you notice in your RB something like that?
mkx
4
I’ve never played with tx power mode … on all my WiFi capable Routerboards it’s set to “default” whatever that might be.