The 436/536 or SDS 100/200 are a totally different scanner. You didn’t do your research on the SDS100 to know what you were getting into. Like anything new, you have to learn how to use it And program it. Anyone new should start off with zip code scanning. Gives you time to listen while you study on how to make favorites. Once you figure it out, it’s easy peasy. Just have to get off your arse and get it done!