What is 'NCPRM'? There are several sited that might help you. Google 'PCRN' (peidmont coastal repeater network)... it is a listing of repeaters in a state wide linked network. Also Artscipubs.com has a state by state listing of repeaters. As far as what you can access mobile that depends on your power, antenna, and location. In other words, 5 vs. 25 watts; rubber duck vs. good mobile or base antenna; in a valley, on a mountain, or on flat land. Remember VHF/UHF is line of sight to the repeater. Don't forget to check out your local ham club for help.