A common thing I see is people running these part-15 (in the US) devices with upgraded antenna systems, which isn’t permitted. Either run it under amateur rules or under part 15.
It’s dead simple to buy and start running your own node. You can get a Heltec v3 for $25 or less on Amazon and after a quick flash, you’re in business.
Some people may prefer to assemble their node from parts rather then buying a completed appliance.
Why are you against that?
your link just goes to example.com
Your link is broken.
Irl link:
https://adrelien.com/blog/meshtastic-diy-how-to-build-your-own-meshtatic-node-esp32-lora-radio/
LoRa & LoRaWAN are next-generation technologies that will support wireless connectivity in IoT, alongside 5G RF Technologies. Uniquely enabling long-range, low-power communication, they are already being used in numerous consumer and industrial applications to solve real-world problems.
https://www.seeedstudio.com/blog/2021/04/27/a-gentle-introduction-to-lorawan-gateways-nodes/