What do you have to go through to change from tuning in antenna channels to tuning in cable channels?

For instance, cable systems use channels 2, 3, 4, 5, 6, 7, 8, etc; broadcast can't use adjacent channels so 3 and 8 are out. Do you flip the switch to antenna and just get snow on those? And cable uses channels between 6 and 7 (that's where 14 - 22 are); do you get snow with occasional aironautics audio when you're switched to antenna and you go there?

Don't forget that elegant can also mean simple and appropriate. Copper wire for phones is 1880s tech, but they haven't found anything more elegant...that is, simple and appropriate. Everything else is more complicated.