I'm a collaborator on a WiFi Heatmap project (see https://github.com/hnykda/wifi-heatmapper). It lets you measure the wifi signal strength at various points around your house to see where it's weak.
The problem: Windows localizes the "netsh wlan show interfaces" output that displays the wifi signal strength (and other information). wifi-heatmapper has a set of localization files that map those strings back to a canonical name (like rssi, txRate, etc.)
My request: Please consider executing the "netsh wlan show interfaces" command on your non-English system and following the instructions at: https://github.com/hnykda/wifi-heatmapper/issues/26 (We already have a few other languages, but having duplicate information is always better.) You can post the info to the issue in Github or send the data directly back to me.
Many thanks.