…and moving nodes [might; see responses] always need to use the slowest data rate, and then are bound to a maximum application payload of 51 bytes (?), which will take almost 2.5 seconds to transmit. And if true, then with TTN’s fair access policy of 30 seconds a day such 51 bytes would only allow for an average of sending one location every two hours…
So, you might really want to keep packets as small as possible, @sergiosena. Let’s discuss that in a new topic: Best practices when sending GPS location data (which also has the references to my claims/assumptions).