Go to the link
http://www.antennaweb.org/aw/Address.aspx

You can put in phony info if you worry about your privacy. Zip code IS important though.
It'll generate a map showing compass orientation and distance to the various transmitters in your area.
I can get most the "network" stations on my roof antenna and the local translators/UHF stations on my $6 Radio Shack "Rabbit ears/LOOP" antenna.
I can get 10 stations without having to adjust anything and a couple more if I want to "tweak it". Of course, if I "tweak it", I lose good reception on a couple of the first 10.