The antenna on the left screen is a trucker cb antenna stuck in my yard. The signals are good, but compared to the antenna on the right, the noise level is high.The antenna on the right is my pvc pipe dipole hung in a tree. As you can see, the signals are stronger and the noise is much less.
There is an overall curve of signals and noise on the left antenna, and the right antenna is more flat leveled all the way across the cb band. This shows the trucker antenna receives well on channel 19, but the dipole antenna is much more broadbanded and receives evenly well across the entire band, and there is no curve.