Originally Posted by SteelDirigible
mount one on the front bumper one on the rear.
Although that would improve performance , in a way , one still has to understand co-phased antennas and the way the propagate the wave.
When mounted on the mirrors of an 18 wheel semi , the antennas have a directional output toward the front and rear of the truck.Since the trucks were mainly on interstate highways this was desirable as most all of their communications were in front of or behind them.An added benefit for truckers is that co-phased antennas would have less sensitivity to signals coming from the side. Base stations off the the highway were not received as strong.