I've got a suggestion when you test the cell service. Create a scenario where a dog would get out of his GPS fence and see how long it takes the cellular to catch up and track.
Glad to hear the tractive which was the better of the two between the whistle. We would leave our fenced in zone for a walk and it might be halfway through the wall before it registers him outside of the zone which was at least 10 to 15 minutes. Yes tractive and whistle were very unreliable in my area.
I can't find anyone who's done this. All the smaller GPS trackers like tractive and whistle I'll have such long hand off times that it basically makes them useless for catching a dog who escapes.
