We went a short trip to the Czech Republic on last saturday, specifically to the beautiful village Lednice in Moravia. We traveled 300km by car. I also had an active LoRa APRS mobile tracker in my car. It is clear that the coverage of i-gates in Slovakia is very poor. In the Czech Republic it is much better, although my tourist tracker with a power of 100 mW does not reach any i-gate in the Czech Republic as well. You just need to connect little PA with at least two watts to the tourist tracker. And it will work!
Here is a map of our trip.
