I am new to scanners and recently got my first one to listen to the police and fire frequencies. I bought it second hand so I am kind of on my own as to how to use it. I've already programed about 20 freqs in but its always on SCAN. I don't know how to zero in on my desired frequency. I have already visited this website for help but it doesn't answer my question. http://support.radioshack.com/support_electronics/36547.htm I've tried the MANUAL button but it only allows you to go up instead of down. I need some help on how to adjust so I can choose 1 frequency that I'll be able to stay on. Thank you.