I'm testing Wavlink WL-WN570HA1 outdoor AP running 19.07.3, 5Ghz wi-fi is built on mt7610e.
The problem that the Tx Power cannot be set higher than 13 dBm regardless of the country code used.
Values higher than 13 dBm (19 mW) are not even available in Luci. Setting higher power manually using iw phy phy1 set txpower fixed {value}
has no effect.
# iwinfo
wlan1 ESSID: "OpenWrt"
Access Point: 80:3F:5D:xx:xx:xx
Mode: Master Channel: 149 (5.745 GHz)
Tx-Power: 13 dBm Link Quality: unknown/70
Signal: unknown Noise: unknown
Bit Rate: unknown
Encryption: WPA2 PSK (CCMP)
Type: nl80211 HW Mode(s): 802.11nac
Hardware: 14C3:7650 14C3:7650 [MediaTek MT7610E]
TX power offset: none
Frequency offset: none
Supports VAPs: yes PHY name: phy1
# iw reg get
global
country PA: DFS-FCC
(2400 - 2483 @ 40), (N/A, 36), (N/A)
(5150 - 5250 @ 80), (N/A, 36), (N/A), AUTO-BW
(5250 - 5350 @ 80), (N/A, 30), (N/A), AUTO-BW
(5470 - 5725 @ 160), (N/A, 30), (N/A)
(5725 - 5850 @ 80), (N/A, 36), (N/A)
(57000 - 64000 @ 2160), (N/A, 43), (N/A)
Edit: found a similar issue on github created recently - https://github.com/openwrt/mt76/issues/401