Need some help in identifying some of the call signs I hear on their system. I know they have basically four beats (A,B,C,D) and that there seem to be two shifts (1= day shift & 3= swing). Example 1C is the day shift for beat C. On occasion I will hear a "Z" unit and an "O" unit. What is their assignment? Also, I'm pretty sure that Angles Camp PD are the "14" units. I hear 14K quite a bit..do they have several canine units? I don't hear a lot of command units on their dispatch. Besides an "S" unit or an "I" (investigations?), I mostly hear beat car traffic. Do they operate on a different freq or just don't use the radio much? The V units must be volunteers. Any info appreciated.