KPFT/Houston has been doing something very similar for almost 50 years.

KPFT's version is a little more specialized. It's called The Prison Show and transmits messages from families to their loved ones behind bars.

When I'm in Houston, I try to listen because it gives you a taste of a segment of life and people you may otherwise never come in contact with. If you're interested in human nature and the power of communication, it's very engaging.

The last time I heard it, it was on in the evening, I think on a weekend.