A question about the Digital Switchover

First off, I hope it goes over in February, and not June. Folks have been saying it's coming for years, the February date has been known for quite a long time now. What are you waiting for, people? If you didn't notice by now, go dark. Meh.

Anyway, the question I have is this. In all the talk we see about the big digital switchover, the talk is that the air wave space that is currently allocated for over the air analog television signals is going to be reassigned for other use. What is going to happen at some point down the road if I plug in rabbit ears to one of my old television sets without a digital converter box? Will my TV set pick up whatever is using that old spectrum space?

I'm sure if it's data, it'll be encrypted, but what if it's used for voice or something? Will my old TV set become the new police scanner radio of the next decade? :)