Very likely, but we need a great deal more information here. Are you using the 396 as a handheld, in a car, as a base radio? In what freq range(s) are you interested? If you are using it as a base radio, can you put something outside?
Duckies (as they are often called) that come with scanners are very much a compromise - usually a poor one on most frequencies. A better antenna, height and proper feeding will bring in lots more...best regards..Mike