I have a radio shack Digital I-scan scanner that I purchased just when they were closing most of the stores. It has great searching by zip code, or town name, but I can't figure out if it will take individual frequencies you want to enter. Also not sure if it will do P25 and display the digital codes. I also have an older radio shack 1000 channel older portable scanner says 1000 channels on the front with a trunking button on far right. My goal is to enter a specific frequency or scan between 163 and 164 picking up and being able to channels on a new P25 system. I believe I know the frequency so it would be best to be able to program it directly. What portable scanners are the best for these tasks.? How about the BCD325P2?