It is where Rove McManus, comedy duo Hamish and Andy and even Waleed Aly got their start.

But that hasn't stopped federal communications minister Mitch Fifield cutting the cord on Melbourne-based community television station Channel 31.

The broadcaster has confirmed it will cease airing on free-to-air television on June 30, with a letter from Mr Fifield delivering the sad news.

In a public letter to viewers, C31's general manager Matthew Field said the decision was puzzling given his organisation's "financial strength" and its commitment to media diversity.