The ABC's plan to recapture Triple J fans who flee the station as they outgrow its youth-focused playlist will be completed on April 30 when its digital sister station Dig Music is relaunched as Double J.

The new name will be more than familiar to many, especially the over 40s who may remember 2JJ (aka Double J) was the forerunner to Triple J.

Back to radio ... Myf Warhurst to host Double J for the over 30s.

Double J was a Sydney AM radio station created by an act of Parliament and lasted just six years from 1975 to 1980, but in that time became a byword for experimental, even radical left-wing radio.

When 2JJ first went went to air, on January 19 1975, it famously played a song banned by commercial radio networks, You Just Like Me 'Cos I'm Good In Bed by Skyhooks. It set the scene for risque and provocative antics by programmers and, to a lesser extent, in its music playlist that shook up the staid world of radio at the time. As well as playing a lot more Australian music than other stations, its programming included comedy, a surf report, a regular spot where listeners described losing their virginity, live music and the occasional wild on-air celebration.