February 27, 1922: This day, the National Radio Conference was conducted in Washington DC by Commerce Secretary Herbert Hoover. In this conference radio industry regulation was discussed widely Commerce Secretary Herbert Hoover convened a Conference on Radio Telephony, composed of representatives of various government agencies and radio groups. The result of the conference was a proposal of band frequency allocation. The conference aimed a total ban on "direct" radio advertising , and even suggested rules governing broadcasting by private detective agencies. The report also aimed Commerce Secretary used his regulatory authority for legislation strengthening .