Heart Dunstable (formerly 97.6 Chiltern FM) was an Independent Local Radio station based in Chiltern Road in Dunstable, Bedfordshire.

The Chiltern Radio Group underwent a number of ownership changes as Britain's radio ownership rules were liberalised, first becoming part of the GWR Group's Mix Network in September 1995, during which time networked programming from the group's headquarters in Bristol was introduced to off-peak hours (after 7pm).

When GWR merged with Capital Radio in May 2005 to form GCap Media, the combined group's local FM network, including Chiltern, was renamed the One Network for advertising clients, though the station was still called Chiltern on air (even returning to the heritage branding Chiltern Radio for a time).

[1] The new station, Heart Home Counties, began broadcasting from Dunstable on 16 July 2010.

[2] Past presenters included Mark Smith, Philippa Collins, Conrad Alexander, Paul McKenna, Graham Torrington, Dale Winton, NJ Williams, Martin Collins, Jeremy Beadle and Chris Moyles.