Tx power level

nRF 52832 + NCS 2.6.1

We are successfully setting the advertising Tx power in discrete steps {-40, -20, -16, -12, -8, -4, 0, +3, +4}dBm using 

bt_hci_cmd_send_sync(BT_HCI_OP_VS_WRITE_TX_POWER_LEVEL, buf, &rsp)

However, I am being asked if there is any way to set the power with finer resolution, either by specifying more fine-grained dBm values or by changing an overall gain somewhere. Is this possible?

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