There's a new system I just learned about (I'm surprised nobody else has brought this up yet, as far as I can tell using the search function) called SPOT. It's a GPS tracker, but what's unique about it for us is that it uses satellites to send the location information out, rather than cell service. So no matter where you land your rocket, pretty much on any continent or ocean near the shore, it will transmit its location to you. The hardware is easily small enough for big projects, and costs about $150. The subscription to get that satellite data is $99/year.
That includes tracking messages every 10 minutes for 24 hours at a time. Once those tracking messages go up from the tracker to the satellites and back down to SPOT ground stations, SPOT will either message, email or web-publish your tracking information according to your settings.
It can also send out SOS signal via satellite for rescue if you want to also use it for your human-based backcountry adventures.
https://www.findmespot.com/en/
That includes tracking messages every 10 minutes for 24 hours at a time. Once those tracking messages go up from the tracker to the satellites and back down to SPOT ground stations, SPOT will either message, email or web-publish your tracking information according to your settings.
It can also send out SOS signal via satellite for rescue if you want to also use it for your human-based backcountry adventures.
https://www.findmespot.com/en/