As with many other thing, there are several paths to arrive at the same result. While I prefer using the "Enter your zip code" method, there is another that may be helpful, particularly if you go to a given location regularly.
In Sentinel, you can Edit the Profile and go to the Location Settings tab. In the lower pane, you can populate a list of locations (append) with an alpha tag, latitude, longitude along with a specific range value for the given location.
After doing a Write to Scanner, you can press Menu>Set Your Location>Edit Location then use the scroll knob to go through the list of locations and select the desired. You can also add a New Location.