Welcome to the hobby and the RR forums! Do you plan to computer program your 1040, and if so, with what software? You'll have multiple choices: WIN500, PSREdit500, or ARC500, all of which come with a trial period to see which one you prefer. I own a RadioShack PRO-651 which is the RS-branded version of the Whistler 1040. While they are operationally identical, I'm not sure if the resulting software files generated by the above programs would translate to the Whistler model. I am currently using WIN500, although I have also used PSREdit500 too. As an option, you can always pick up a subscription to RR.com. It's inexpensive enough, and enables you to download frequencies and agencies of your choice to any of the above-mentioned software for uploading to your scanner.