The Wi-Fi SSID reported by speccy does not support emoji characters.
Attached file illustrates bug with a duck emoji [????] not being displayed correctly.
well bugger me, you can put emoji's in network names.
I can just see it now - "Hey Dad, what's your wifi name?"
"Oh, that's easy son, it's 'default' followed by a happy face, a pile of poo then a thumbs up emoji"
"Nope, sorry Dad, there's more than one in the area, is yours a yellow or a brown thumbs up?"