Demo Trailer LRAD

This is the LRAD demo trailer with the LRAD on top of the mast.  This LRAD broadcasts in all directions (360 degree).  The demo trailer mast extends to 30 feet in height.

versus

Ground-Mounted LRAD   

The ground-mounted LRADs are on 50 foot poles with 10 feet underground and 40 feet above-ground.   The higher elevation of the ground-mounted LRADs  accounts for some of the greater sound propagation for ground-mounted LRADs versus the LRAD on the demonstration trailer.