I've been using Win 500 for a couple of months now to program my Whistler WS 1065 and I've been well satisfied with the way it works for conventional systems. I've yet to get it to program my scanner for trunked systems, though I have tried. The systems seem to be in the scanner, buy yet it doesn't scan them. I've attached a screen print of the message I get when I click on the TSYS tab in Win 500. I'm far form a novice with computers and other electronics, but this has me stumped. I hope someone on this forum can help me out.