Outdoor antenna setup

Agree with most of the above, FM reception becomes extremely difficult past 60 miles. If there are ANY large mountains in the vicinity, it is worth a try to aim your Yagi at the mountain and see if you can get the bounce signal. This will often be stronger and more consistent than relying on atmospheric conditions and random luck to get you a strong enough signal. Good luck...

Sean, the 60 mile thing is based on typical flatland topography and a typical transmitter and receiver height. Obviously, if you have a 1000' antenna at each end, you're going to do better. But the point is that FM signals are line-of-sight only, that is, they do not bend around the curvature of the earth. AM signals do bend, because they are much lower in frequency, but FM does not. It will occasionally bounce off the ionosphere if conditions are right, but that is not a reliable method of receiving.
Therefore, if you are able to physically see the transmitter from your house (at least in a theoretical sense, ignoring smog, the tree across the street, etc.), then you will be able to receive very low-powered stations with very little difficulty. If you can't see the transmitter, then it's instantly a whole different ball game. And all those giant antenna arrays are needed to get the BOUNCE signal, that is, an extremely weak reflection of the original signal, whether it is off a geographical feature (usually) or even a man-made structure. That is why it is often best to aim a highly directional antenna at a big mountain, sometimes even if it's nowhere near or even in the same direction as the actual transmitter. The bounce signal off the mountain may be stronger and cleaner than any other bounce signal you can get, and even then you aren't going to pull it in unless you have a very good directional antenna.