[bergie]

No, you need to switch the region manually. Not a big deal to do for a couple of nodes.

The trickier part is to figure out the correct preset for more exotic locations. I've had to ask a couple of times from the local Meshtastic community group.

[jonhohle]

There’s no reason this can’t be done in software though via GPS, right?

[wtallis]

Many (if not most) Meshtastic devices don't have a GPS receiver of their own, and also may not be paired with a phone app to supply location. So at least some devices would need to sniff GPS coordinates from traffic on the wrong band in order to know it's time to switch to the new band appropriate for the new location. Some amount of automatic reconfiguration could probably be made to work, but there would be serious limitations on how many use cases it could handle.

[bergie]

I think the primary problem is that the polygons for regions would take quite a bit of space in the limited microcontroller.

Though bigger reason likely is that very few people actually travel between different regions