UHF 52 to 69 were vacated as part of the digital transition. UHF 70 through 83 were cleared in the early 80s. Back in the old days of analog tuner TVs with fine tune knobs you could listen to half of an analog cell phone call in the high UHF channels. That fun all stopped when analog cell phones went away. I'm somewhat of an RF nerd. I'm an extra class ham radio operator and have piles of radio related stuff in the basement. It's kinda fun communicating around the world in these days of Internet technology with nothing but a radio and 130' of wire strung between two trees.
I remember when the audio for channel 6 was broadcast at what woul have been 108.1 FM. Of course it bled through to 107.9.
You could catch analog channel 6 audio on a FM radio at 87.9. Far low end of the radio dial. The audio quality wouldn't be the best as you were about 200kHz off the center frequency. Analog TV used FM for the audio portion of the signal and was centered right around 87.7. 108 is the start of the aircraft frequency band and is AM modulated if I remember correctly. Years back when I drove back and forth to the Detroit area I'd listen to the 6 PM news on WLNS in Lansing on my way home for something different to listen to.
Yeah, guess I got the wrong end. I remember on Saturday nights turning the dial all the way and listening to WWF.