It is named after the River Foyle which flows through Derry, the city where the station is based.

At all other times, and throughout the weekend, the station's frequencies carry BBC Radio Ulster.

There is also a small television studio based there used for interviews with the interviewee sitting in front of a CSO screen which normally has a live view of Derry.

During this trial, the bitrate of Radio Ulster would drop during Foyle's separate broadcast hours, with Foyle carried as a split audio stream in the remaining space; outside of split shows, the full bitrate would revert to Radio Ulster.

[1] When the Digital One ensemble commenced broadcasting in Northern Ireland certain stations that used Digital One in the rest of the UK left the Northern Ireland ensemble, leaving space for Radio Foyle to broadcast in Stereo without the need for the Radio Ulster capacity to be split.