A TV Fool report based on your actual location would be best. To generate a report when the address look up fails, use the
Interactive TV Maps tool as a start. Enter your ZIP code, then move the onscreen pointer to your exact location. You can then click on the "Make Radar Plot" button.
An attic mounted antenna has a nearly indefinite life expectancy. So if you get reliable reception with that option, it's quite advantageous. Some attics are not satisfactory receptions sites though.
If you need to mount outside, there's good news. The HOA rules are preempted by FCC rules. You have a protected right to install and maintain an antenna for reception of OTA TV signals.
http://www.fcc.gov/guides/over-air-r...n-devices-rule
FWIW: Windows-7 Media Center can be configured to use multiple HDHR tuners and you can configure each tuner as preferred sources of select stations. The user does not need to even know which tuner is used once the system is setup.
Because you have at least one traditional TV, we need to suggest an antenna or combination of antennas that can provide a 'complete' lineup on one coax if possible. Based on your first TVFR, a DB4e facing due west should give you a reliable NBC along with the other major networks. If that's not true in the attic, it suggests the attic construction includes undesirable materials that absorb or reflect RF.