[ADTech]

The simulator calculates that the KRBK signal path switches from 1-edge to LOS between 105 and 110'.

However, given that the resolution of the digital elevation model used for the simulator may easily have 5 or meters of vertical error and the cell in which it places each elevation for the complete signal path evaluation is either a 30 or 100 meter square, it's far from a precision calculation.

An LOS signal path is not a requirement for solid reception (but it sure helps) and most people who use antennas rely on paths that calculated to 1-edge or 2-edge paths. The important thing is to get the right antenna into a spot that happens to coincide with a signal that's "good enough". Goldilocks, if you will.