I’m sure I read a recent post where it was claimed WiFi connectivity is 2.4GHz only.
In reply to another thread I forced Roam 3 to connect to my home WiFi whilst monitoring APs on UniFi network App.
I forced Roam 3 to connect from Settings menu by triggering ‘Check for updates’..
UniFi client log recorded a brief connect and disconnect from MAC address b4:6f:2d:??:??:??
This general MAC is assigned to Wahoo Fitness, the ?? are unique for product and serial number.
I can confirm that Roam 3 connected channel 48 (5GHz), 80MHz.