The superintendent of the department of public safety is authorized and empowered to establish such systems of communication for the department as may be appropriate, including one or more radio broadcasting stations in the state, one of which shall be at the departmental headquarters. Such systems shall be used for police purposes only. The superintendent is further authorized and empowered to provide for the purchase of the necessary apparatus and equipment, and of materials for the construction and maintenance of such systems, and shall be responsible for the operation, maintenance and conduct thereof.