GB News is planning to launch on Digital One in July just weeks after the television service of the same name starts broadcasting.
The national station will be available across the UK and final negotiations are currently taking place with Arqiva to secure a slot.
The output will be a full audio simulcast with the television station, meaning no special programmes or content will be made for the radio channel.
GB News is currently securing a licence to join a DAB multiplex too.
Chief Executive Officer Angelos Frangopoulos said: “GB News is a digital start-up designed to bring greater plurality of voices to UK media so we’re passionate about delivering our programmes on every platform we can, including live DAB digital radio.”
He added: “It’s a considerable challenge to expand into radio so quickly but this opportunity is too great to miss.
“It means we can serve more people by giving them the choice to tune in to us anywhere, any time.”
Mr Frangopoulos said it was rare for spectrum capacity to become available on the D1 national radio multiplex. “It was a highly competitive selection process so we’re really delighted,” he said.
“We look forward to partnering again with Arqiva, who already take care of our terrestrial and satellite television signals as well as our fibre connectivity.”
The television channel, GB News will be available on Freeview and You View channels 236, Sky HD 515, Virgin Media HD 626 and Freesat 216 from this Sunday at 8pm.