Now just a sec.
He asked a really good question.
You understand that the higher the frequency the shorter the wavelength. and the distance (believe it or not) is a heck of a lot smaller than lower frequencies. This is one reason why you can pick up stations from far away with low frequencies. This is at least what I think it is.
About 3 years ago, I built a cheap shortwave radio when I was learning about amplifiers. and I managed to pick up a station from Alabama, and yet, I'm still in Ontario, Canada.
When I play with my superregen at a high frequency, I can't pick up stations outside of Ontario.