Created a Site, both PTP and PMP links Using LINKPlanner v.4.3.5. What I would like more information on is what is the RED line represent in the Profile view? The reason why I'm confused is that no matter what type of LOS I use at some point the red line always goes into the ground before reaching the end point. The distances are under 3.5 (PTP) and one over 4.5mi (PMP). There is LOS for the PTP with everything below it. I have attached some snapshots images showing what I'm referring to.
I can adjust the antenna heights to whatever value, but the red line will not reach the end-points in a straight line.