I'm a newbie so please be patient...when scanning a trunked system i have a few questions about operation and the display.. the second line from the bottom of the screen says "SO: 1------------" and i can't seem to find what "S.O." refers to in the manual. Also, i have 5 frequencies in this paticular system and when pressing the hold button and scrolling to the end of the frequency list the display shows the talkgroup ID with a paticular frequency from the programmed group displayed below it (this frequency is transmitting a consistant "fuzz" and i'm assuming it should be locked out but not sure...). and my major question is this... If i want to scan that system only, should i be on the screen that has the talkgroup ID on it???