A radio wave receiver includes a receiver controller that performs a signal capturing action in regular or irregular intervals to capture data transmitted on radio waves from a remote terminal in synchronization with the signal capturing action. The receiver controller includes a correctness determination unit and a capturing frequency setting unit. The correctness determination unit calculates an error rate or a correctness rate of the data captured by the receiver controller to determine the correctness of the captured data. The capturing frequency setting unit sets a capturing frequency indicating the number of times the signal capturing action is performed during a certain period in accordance with the correctness of the captured data.