The future of Channel 4‘s digital radio prospect was on the table at today’s Radio Reborn conference, prompting some cagey answers from Natalie Schwarz, chair of the 4 Digital group over their ongoing discussions with Ofcom.

In the clip below Matt Wells, head of audio at the Guardian, challenges Schwarz’s comments:

[audio:http://www.journalism.co.uk/sounds/dab.mp3]

Speaking from the audience, Ofcom’s director of radio and multimedia Peter Davies did concede that Channel 4 had not asked for an extension to the launch date of Channel 4 Digital.