I hate to side with a FE'r here, especially this one but I think he is correct about the distinction between radiowaves and microwaves.
ra·di·o wave
noun
noun: radio wave; plural noun: radio waves; noun: radiowave; plural noun: radiowaves
1.
an electromagnetic wave of a frequency between about 104 and 1011 or 1012 Hz, as used for long-distance communication.
mi·cro·wave
ˈmīkrəˌwāv/
noun
noun: microwave; plural noun: microwaves
1.
an electromagnetic wave with a wavelength in the range 0.001–0.3 m, shorter than that of a normal radio wave but longer than those of infrared radiation. Microwaves are used in radar, in communications, and for heating in microwave ovens and in various industrial processes.
Both radio and micro waves are types of electromagnetic waves that are defined by the range that they fit in the electromagnetic spectrum.
Here's the spectrum which I'm sure we are all familiar with:
Wikipedia actually makes this distinction:
Microwave technology is extensively used for point-to-point telecommunications (i.e., non broadcast uses). Microwaves are especially suitable for this use since they are more easily focused into narrow beams than radio waves.
Honestly, why is this even relevant? This is just a semantic argument.