Groove MikroTik Metal 2 SHPn problem with Tx power

RouterOS Wireless Networking
1

Good afternoon. Please suggest on the Groove MikroTik Metal 2 SHPn: when installing any mode Tx Power (card rates; all rates fixed; manual; default), the value of Real Tx Power is always lower by 6 dBm
Rate Tx Power Real Tx Power Total Tx Power
1Mbps 20dBm 14dBm 20dBm
2Mbps 20dBm 14dBm 20dBm
5.5Mbps 20dBm 14dBm 20dBm
11Mbps 20dBm 14dBm 20dBm
6Mbps 20dBm 14dBm 20dBm
9Mbps 20dBm 14dBm 20dBm
12Mbps 20dBm 14dBm 20dBm
18Mbps 20dBm 14dBm 20dBm
24Mbps 20dBm 14dBm 20dBm
36Mbps 20dBm 14dBm 20dBm
48Mbps 20dBm 14dBm 20dBm
54Mbps 20dBm 14dBm

To transmit a 20 dBm must set the value of 26 dBm? Why the difference in 6 dBm if other boards such is not noticed.
Thank you!

2

the power that you set and the power that is in the Total power is the correct output power. The Real output power column shows the power in the eeprom. Metal2 board has 6db offset. Offset is needed if the boards power is capable of more than 30db,

3

Which turns out in reality power? According to the connected clients see that the offset is present.

4

total power is the correct output power that is sent out from the card.

5

Only look at “total”. “Real” is software value that means nothing for you in real life.

6

Thank you all for your advice