Difference between low and high amplitude waves

What would be the difference between radio waves produced by a walkie talkie with a range of 10 meters (lets say) versus a radio wave antenna placed at the top of a hill.
I assume the antenna produces a different type of radio wave, and a much stronger one.

I would like to understand, is the amplitude different between ‘cooking’ microwave radiation and visible light radiation?

What happens when we have high amplitude visible light, compared to low amplitude UV light. Is there a point where the energy of the UV is lower than the visible when the amplitude is affected?

Is there a limit of how high the amplitude of a wave can be ? Could a wave change nature when the amplitude is too high (for example a change between UV to X ray) ?