From the ABC report of 1956/57

 From the ABC report 1956/57 - here

Local TV drama did not even get its own section it was shoved in “drama’. Also the TV plays were not listed in the appendix of the report at the end but the radio dramas were.

Here is an extract from the report which does mention TV drama:

Although limitations of space dictated a modest beginning, to our television drama activities, the Commission was determined that opportunities for Australian artists and writers would be provided in this new field. A play was successfully produced on the opening night of the television service in Sydney and, from then on, a fortnightly production of a thirty-minute play was undertaken in Sydney and a monthly production of the same length in Melbourne. Plays presented included "The Twelve Pound Look" (J, M. Barrie, "The Proposal" (Chekhov), "In the Zone" (Eugene O'Neill), "Three-Cornered Moon" (Michael Arlen), "The Rose and Crown" (J, B. Priestley) and "Elizabeth Refuses" (an adaptation from Jane Austen's "Pride and Prejudice").

Longer plays could not be undertaken in the Commission's own studios but, towards the end of the year the first sixty-minute plays—"Tomorrow's Child" and "Shadow of Doubt—were produced, using cameras of the ABC mobile television unit in hired studios. This policy will be continued until the ABC's own studios are ready for use.

Television is a new medium for Australian writers and, to assist them, a pamphlet was prepared offering practical advice on the technique of television plays. One of the first plays produced by the ABC—"Sub-Editor's Room"—was by an Australian and the ABC hopes that many local authors will become interested in writing for television.

 There were a number of radio plays done by the ABC from local authors. 

From the report:

Drama: In sound broadcasting, perhaps the most important project of the year was the commissioning of the well-known local authors, Ruth Park and D'Arcy Niland, for a half-hour serial, One Man's Kingdom ." This was designed to tell in lively dramatic form the story of the nation's development in the latter half of the nineteenth century. It was felt that the events of history, brought to life through the trials and tribulations of an imaginary family, could be depicted with greater clarity and colour in the form of a dramatic serial than is possible in the pages of a book of reference. Such proved to be
the case and many enquiries about a possible re-broadcast of the serial were received.

 Among other Australian plays broadcast for the first time were 'The Damask Rose" (Coral Lansbury), "They Sailed on Friday" (William Jcnner), "Exit" (Dymphna Cusack), "Golden Slumber" (Catherine Shepherd), "The Square Ring" (Ralph Peterson), "Meadowsweet" (Vance Palmer), and "Corner-stone" (Gwen Meredith).

The ever-popular "Blue Hills," by Gwen Meredith, continued to attract large audiences, while Joy Hollyer's adaptation from Victor Hugo's novel, "Les Miserables" (programmed as "Pursued"), and Edmund Barclay's adaptation from Henry Handel Richardson's "The Fortunes of Richard Mahony" proved highly successful as daily serials.

There were a number of Australian writers working successfully for radio - but they didn't make the jump.

The report says there was a quota of 5% for works by Australian composers.