noun
wireless transceiver; radio; walkie-talkie
General term for a device that transmits and receives radio signals, including handheld radios, vehicle-mounted units, and base stations.
登山中は無線機で連絡を取り合った。
We kept in touch using walkie-talkies while climbing the mountain.
警察官が無線機で本部に報告した。
The police officer reported to headquarters via radio.
Typically a broadcast receiver for listening to programs; 無線機 implies two-way communication capability.
Compound of 無線 (wireless) and 機 (device, machine).