I'm doing a law enforcement diorama (Border Patrol), and I was wondering if there existed technology which would let me record some dispatcher/agent radio traffic so that people looking at it could push a button, and "hear" what is happening in the diorama. This would add a little more realism, I think. I don't want anything fancy or expensive. Any help would be appreciated.
I'm making it in HO scale. There is a train in the background that aliens will be jumping off of, and in front of that there will be a U-haul truck that is being stopped that will have either aliens in it, or narcotics, I'm not sure yet. I'm about 50% done. Thanks, in advance!!