I just recently bought a RF spectrum analyzer. For a test I hooked up an FM antenna and displayed 87MHz to 109MHz. Boom, the biggest peak was the NPR station.
They are sneaky about lying. They were doing a story about whether illegal immigration drives down wages and looked at two poultry factories which were 25 miles apart. The had about the same wages but they were so far apart one couldn't hold down the wages of the other. Sounds reasonable until you think "Wait a second. I've commuted more than 25 miles for jobs before. That's well inside the same labor market.". But one little lie and they sweep that all under the rug.
If your biggest peak was an NPR station that was the one you are closest to. 100,000 watts is the max. To have that your transmit antenna must be at least 1000 feet above the ground. Doesn’t matter who you are.