Problem with 5GHz in unifi ac mesh

Installing and Using OpenWrt Network and Wireless Configuration
1

hi there i have unifi ac mesh aps i have problem with 5ghz its didnt work .

 root@OpenWrt:~# iwinfo radio0 scan
No scan results

this is my wireless config

config wifi-device 'radio0'
        option type 'mac80211'
        option channel '36'
        option hwmode '11a'
        option path 'pci0000:00/0000:00:00.0'
        option htmode 'VHT40'


config wifi-iface 'default_radio0'
        option device 'radio0'
        option network 'lan'
        option mode 'ap'
        option ssid 'SKYWAVE'
        option encryption 'none'

config wifi-device 'radio1'
        option type 'mac80211'
        option channel '11'
        option hwmode '11g'
        option path 'platform/qca956x_wmac'
        option htmode 'HT20'
        option disabled '0'

config wifi-iface 'default_radio1'
        option device 'radio1'
        option network 'lan'
        option mode 'ap'
        option ssid 'SKYWAVE'
        option wds '1'
        option encryption 'none'
2

Those should work with 18.06.1. There is some confusion which build to use. I used the uac "lite" firmware rather than "mesh".