"Marc Delporte" wrote
By tracing the directional pattern of the antenna system on a sheet of
tissue paper, then placing the paper over the azimuthal map,
the "coverage" of the antenna will be readily evident.
_________________

The "coverage" provided by an antenna is defined by much more than its
radiation pattern. Overlaying the radiation pattern on a map is almost
useless in determining coverage except in a very general way.

Some of the other factors determining coverage a

- Frequency
- Time of day
- Season of year
- Sunspot cycles
- Terrain profiles
- Earth conductivity

Coverage software is available that considers the most important factors. I
am familiar with the versions applying to AM/FM/TV broadcast, but not for
ham radio. I imagine someone else will post info leading you to that.

RF