WLS (World's Largest Station) was a rock and roll AM radio station in Chicago. Broadcasting with 50,000 watts, the signal reached several Midwest states. It came in clearly at night in northern Minnesota, where I grew up.
I acquired my first transistor radio when I was 15. It had an earphone jack and a single earpiece, no stereo. Much enjoyed listening to it in bed at night.
KOMO was another 50K watt station, broadcasting out of Oklahoma City. It too, came in clearly at night. KOMO featured The Kissing Tone, which was very helpful to naive teenagers like myself.
Shortly after getting my driver's license, I asked a girl out on a date. An older girl, no less. After the movie, of course, I wanted to park somewhere and make out. Problem was, I was too shy to ask her if she was interested, and too timid to just park, slide across the seat and clamp a lip lock on her. Instead, I tuned the radio in to KOMO, and drove around town, waiting for The Kissing Tone.
Finally, 40 minutes later, The Tone came on, a 15-second hum. I pulled over to the side of the road, put the car in park, leaned over and kissed her. Then, I took her home. That pretty much sums up my wild escapades with high school girls. Pathetic.