Im interested in purchasing the PSR-400 for general scanning of conventional systems. I have very little to no trunking in my area at all. Will this scanner work and be a wise choice for future trunking when my local area goes this route? I currently have a PSR-100 and it works great for what I listen to. I just want a good base scanner for my kitchen counter top. Also can I program my local conventional channels in by hand or will I need to use win/97...or similar software...?