I found this video entertaining, and a nice explanation of superheterodyne  mixing and why it is the basis of all modern radios.

https://www.youtube.com/watch?v=hz_mMLhUinw

One point worth making, not in the video, is that changing the baseband frequency of the signal as it passes through the system means that the possible feedback loops are minimised.
For example, in the old fashioned TRF (tuned radio frequency) wireless sets, there was only one signal frequency, selected by the input tuning circuit, which was amplified successively by each same tuned amplifier stages. Thus a signal leaking from a more powerful later stage will get back into an early, more sensitive stage, and cause positive feedback and howling.

The superhet process means the signal at the same frequency as the sensitive earlier stages of amplification does not exist in the later stages, so feedback is eliminated. This is important in domestic radio, and far more so in the end-to-end amplification in a satellite payload, where input signals are very low, and outputs much higher.

I hope that is interesting - maybe details are inaccurate, but the principle is the thing.