Sorry, Hungrymonkey, but that ain't it. I used to have a couple back in the 70's and 80's, but that link is for something different. The one I'm looking for plugs into the antennae lead between the antennae and AM radio and has an FM dial so you can recieve FM radio on the AM . It's a small unit that fits under the dash, about 3 1/2 inches wide and an inch thick. I looked on Radio Shacks website but didn't see one. I'll have to ask a guy down the road, if he knows of if and where you can still get them.