無線 (musen) Japanese meaning: radio (communication) | KotomoraWe kept in touch by radio.
Usage patterns
〈人〉と無線で連絡するto contact someone by radio
The captain contacted headquarters by radio.
無線LANに接続するto connect to a wireless LAN
I connected to the wireless LAN at the café.
無線でつながるto be connected wirelessly
This speaker connects wirelessly to a smartphone.