Back to the questions about NOAA sites, someone said they look exactly like FM installations. My experience is that they use vertically polarized only antennas. As a radio aficionado, I have a few NOAA radios, and scanners, and analog VHF radios that cover the Weather Band, acquired over the years. If you have a NOAA fixed location radio, they are often compromised by the antenna polarity. If you have a telescoping whip on a Universal Joint on a scanner, you can chase the received polarization and have good reception on the local NOAA station, and have fun DXing NOAA stations, often 200 miles away. Never heard any on E skip yet. Unless you buy a very expensive professional VHF Yagi for that band, you would have to build a vertically polarized Yagi for optimum DXing. 2 meter Yagis are too sharply tuned to work vey well on the 162 MHz band.