root@OpenWrt:/# iwinfo wlan1 info
wlan1     ESSID: "TestAP"
          Access Point: 50:64:2B:92:73:92
          Mode: Master  Channel: 40 (5.200 GHz)
          Tx-Power: 20 dBm  Link Quality: unknown/70
          Signal: unknown  Noise: unknown
          Bit Rate: unknown
          Encryption: none
          Type: nl80211  HW Mode(s): 802.11nac
          Hardware: 14C3:7662 14C3:7662 [Generic MAC80211]
          TX power offset: unknown
          Frequency offset: unknown
          Supports VAPs: yes  PHY name: phy1