Translation guide
A sustaining programme is a broadcast program, typically on radio or television, that is funded by the station or network itself rather than by a commercial sponsor. This term is somewhat dated and specific to the broadcasting industry.
A radio or TV program produced and aired without commercial sponsorship, funded by the broadcaster.
Literally 'self-produced program'. This is the most direct and common modern equivalent, used for programs produced in-house by a station, often implying they are funded internally.
そのラジオ局は自主制作番組を増やしている。
That radio station is increasing its sustaining programmes.
Means 'station-provided program'. This explicitly indicates the program is provided by the station itself, without an external sponsor. Common in broadcasting contexts.
この時間帯は局提供番組です。
This time slot is a sustaining programme.
Literally 'non-sponsor program'. A straightforward way to describe a program without commercial sponsorship. Used in industry contexts.
ノンスポンサー番組は広告収入に依存しない。
Sustaining programmes do not rely on advertising revenue.
Similar to 自主制作番組 but emphasizes 'in-house production'. Often used when contrasting with outsourced or purchased programs.
地方局は自社制作番組の比率を高めたい。
Local stations want to increase the ratio of sustaining programmes.
The English term 'sustaining programme' is primarily historical, used in early radio and TV. In modern Japanese broadcasting, the concept is often just called 自主制作番組 or described as スポンサーなしの番組 (program without a sponsor).