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Usually the motels which used the VHF tuner only would have a private cable system which would convert the UHF channels to VHF plus add in a few premium channels like HBO from a satellite dish. The sets I remember most were RCA's with a single knob varactor tuner and sometimes a built-in radio.
I can remember in Virginia Beach one time in the 1980's when I was a kid staying at a motel I was able to fix the sound on a GE TV with a volume limiter control. The limiter control was inside a concentric knob with another control but I had a screwdriver which would fit.
The Mural TV's probably got left on constantly and the heat buildup from the tubes led to more failures. These were usually high-end models of the consumer RCA chassis with additional features such as lighted channel numbers and a 75 ohm antenna input. The ones I have (a b/w 19" and a CTC-53 and 39) work fine after some repairs.
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