The picture shows nothing more then the noise being generated within the radio. The measurement was taken in a shield room that is free from all outside rf  signals. It has nothing to do with how the radio responds to wanted radio signals. Even with the noise issue, the supercharged PL-380 (old  or new) is a wondrous thing. You just have some noise pop up at certain frequencies as you tune the dial. If YOUR radio is overwhelmed by external noise the first thing you need to do is move to a park or other quiet location to make sure the problem is not coming from a local source of which there are thousands and go from there.