A control station device includes a wireless machine having an interference determination unit that uses one or multiple methods for a received signal to determine in real time whether interference has occurred, a multi-wave simultaneous reception start determination unit that causes received interfering waveform information to be held in a memory and determines whether a plurality of signals have been simultaneously terminated, and an alarm display unit that issues a first alarm indicating an interference state and a second alarm indicating termination of simultaneous transmission based on information from the interference determination unit and information from the multi-wave simultaneous reception start determination unit.