There's a couple reasons this is currently happening: 1) The Starlink Constellation only looks for your base station in it's allocated cell and isn't setup to

There's a couple reasons this is currently happening: 1) The Starlink Constellation only looks for your base station in it's allocated cell and isn't setup to scan and discover mobile stations 2) Right now there is no communication inside the constellation (they might have launched a few with the laser links but it's not turned on broadly) so the satellites are linking down to another base station that has access out to the wider internet. They need to provision access on those so they don't get overwhelmed. 3) The base station itself needs to know where it is well enough to hit the active satellite for it's cell. You might be able to do that without GPS but it is an issue you have to address. Both of these are supposed to be solved eventually and they've said they are planning to allow roaming base stations eventually.