Does anyone remember?

when this was first aired on t.v. back in 1984, I was living in Southern California and they simulcast it on local t.v. as well as on the radio. I wasn't allowed to watch it when it aired because I was grounded for some reason but my parents taped it for me to watch when i got off grounding, but I was able to tune into it on the radio and at least listen to it. I was just wondering if it was broadcast on the radio in all areas or was it just in the L.A. area?