No, we cannot detect electromagnetic waves with amplitudes larger than the Earth. The amplitude of an electromagnetic wave is typically on the order of the magnitude of the electric and magnetic fields it comprises. The Earth, being a massive object, has an extremely large physical size and a corresponding large scale of electric and magnetic fields associated with it.
The amplitude of electromagnetic waves that we commonly encounter in our daily lives, such as radio waves, microwaves, visible light, and even intense sources like lasers, is much smaller than the size of the Earth. These waves have amplitudes that are typically measured in volts per meter (V/m) or teslas (T), which are many orders of magnitude smaller than the Earth's size.
Detecting an electromagnetic wave with an amplitude larger than the Earth would imply that the electric or magnetic field associated with the wave is on a scale that is physically impossible or beyond the boundaries of our current understanding of physics.