MS Streets and Trips
I use Microsoft Streets and Trips.
Its older and resides on my computer and I have a file of thumbtacks for scanner GPS locations and other things. You can set up the "location" function of Streets and Trips that reads out the GPS coordinates that the Sentinel software and the scanner understands. The coordinate data has to be manually entered on the map thumbtack and Sentinel.
Location scanning is revolutionary, I have travelled thousands of miles without locking, unlocking or quick keying systems. All I do is adjust the volume. It just plain works. I got excited when the 536 offered rectangles. I could profile specific roads, like toll roads. Most counties are more square than round.
Mapping allows GPS control to a micro level. How about turning on a retail or mall system only if you are within a half mile? There are many other examples.
The location settings from the RR database are hit or miss at best. Some states have tight, coherent location data. Most are just sloppy with every entry in a county with the same coordinates and a 20 mile radius. State systems can have equally absurdly large radius. Work with a map and you will be turning on towns at the city limits.
Its been a long trip and my map always needs updating, but it is worth it.
Good luck.