"Unless you're going to mount the radar at eye level, "
A clueless boat owner who doesn't read the installation
manual can still put the radar too low, and irradiate crew standing on the bow. Depending on the radar, the beam may have a vertical spread of 20-40 degrees and that "cone" should be clear above anyone standing on deck
, and clear below any antennas that are aloft (like the VHF).
Usually not a problem but perhaps a professional installation
might be more reassuring.