Take a look at this link to YouTube. The person doing the show, who is Bob Sirott, brought an antique radio to my former employer to be restored. Since I like Bob, I restored it on my own time and donated the parts from my dad's forty year old stock.
I never realized Jan Gabriel was the voice in the dragstrip commercials; I remembered him as a guy who hosted a show on TV called "Up Tempo." It was sort of an "American Bandstand" show which originated in Chicago. If Jan Gabriel only knew how many times I tried to mimic his dragstrip commercials, he would have had a good laugh. He became the announcer for Santa Fe Speedway. It was advertised as the only speedway with a track of clay. I was never there for the races, but the wooded and unpaved parking lot was the site where at least three major hamfests were held during the summer months. I'll bet I was there at least thirty or forty times on a Sunday, but there weren't any races while I was there.
I forgot to mention Bob Sirott was one of the WCFL deejays during the station's most popular years.
(In the Ham radio world, "73" is short for "best regards", originating in Morse Code, when we abbreviated as much as possible. Both Ron and I are Ham radio operators...Bud)