LoRa is a proprietary radio interface, so I don’t how how FOSS you can go with it, but the Meshtastic firmware itself is FOSS.
What are your use-cases? Are you looking for something to use as an everyday carry? An outdoor solar node to relay messages in your area? A node to use as a base station? All of the above?
For everyday carry, I semi-recently bought the SenseCap T1000e and I love it. I did a post about it here: https://startrek.website/post/34105873
Seeed (the company that makes the T1000e) also makes a nice outdoor, solar powered node: https://www.seeedstudio.com/SenseCAP-Solar-Node-P1-Pro-for-Meshtastic-LoRa-p-6412.html
They’ve also got a lot of options for various other configurations as well: https://www.seeedstudio.com/LoRa-and-Meshtastic-and-4G-c-2423.html
Those are all “turnkey” devices, but I’ve heard good things about the Heltec V4 if you want to go a more DIY route and make your own case and add your own accessories (GPS, accelerometer, etc).
































Could be any or all of that, yeah. You can also set the level of precision for your reported location, but I don’t think even the lowest precision settings would put it 1,000 miles away.
I live near-ish to an airport, and I’ll occasionally see nodes that are 1 or 2 hops and 100-200+ miles away. Best I can tell, the airborne node is legit relaying those which I think is pretty cool. Not really useful, but cool.