I am a total scanner noob and recently purchased a pro-82 scanner from Radio Shack. I had a scanner when i was younger but regretfully I sold it. I am having problems with understanding a basic function. I want to be able to enter a frequency into the scanner and start searching from that point. Do I have to have the particular frequency programmed into the scanner in order to search from that point or is there a way to simply just type the frequency in and go from there??