17 It is quite unbecoming for the Church's children idly to permit the message of salvation to be thwarted or impeded by the technical delays or expenses, however vast, which are encountered by the very nature of these media. Therefore, this sacred Synod advises them of the obligation they have to maintain and assist Catholic newspapers, periodicals and film projects, radio and television programs and stations, whose principal objective is to spread and defend the truth and foster Christian influence in human society. At the same time, the Synod earnestly invites those organizations and individuals who possess financial and technical ability to support these media freely and generously with their resources and their skills, inasmuch as they contribute to genuine culture and the apostolate.
Source: Inter Mirifica (Vatican.va)