Goldvin, VA. By the way we live amazingly close to one another.15 SD channels on each broadcast tower?
In the Washington D.C. market, we used to have MHz Networks which specialized in foreign language channels, all of which were SD IIRC. They had 6 channels on their very local (2mi away from me) broadcast tower in Merrifield, VA, and another 6 channels broadcast from a tower southwest of Dale City (name escapes me but it started with "Gold"). They all appeared as subchannels of 30. The MHz Network has subsequently given up both stations in favor of streaming only.