system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 Why are radio stations identified by their exact frequency, such as 103.1Mhz, whereas TV stations were traditionally identified by a generalized channel number, such as 7?
gpt
Radio signals are a single frequency.

TV signals contain(ed) multiple frequencies (for the video, RGB colors, and separately for the audio), so they made a dial with "channels" instead of having multiple frequency dials and forcing people to "tune" the image and then "tune" the audio separately.  That way you tune into the "channel" and the TV tunes into the sets of frequencies required to receive the video AND audio for that station.