A radio communication device is a radio communication device that performs radio communication by a press-to-talk communication system, and includes an operating unit that receives an operation of a user, an output unit that outputs a received voice signal as a voice, and a volume adjusting unit that adjusts a volume of the voice output by the output unit. The volume adjusting unit acquires source information that indicates a source of the voice signal when a predetermined operation by a user is made with respect to the operating unit, and adjusts the volume of the voice by using an adjustment coefficient that is a degree of adjustment of the volume of the voice, based on the acquired source information.