Thanks, guys, but neither of those websites are what I'm looking for. The website map had all of the "registered" repeater sites in the data base, and the user of the site chose which ones would be displayed by band selection 2m, 440, etc. and the area of terrain displayed. The confusion of overlapping propagation displays was solved by making the overlapped areas a slight darker shade with each layer, and the user could click on a repeater site to turn its propagation display on or off.
It was a sophisticated and highly useful website. Perhaps it was pulled down by the DHS to prevent reverse engineering it into a radar masking tool. As I recall it used 1:50,000 scale NOAA geodetic charts and relied on a N0AA website for the map display.