If you need to do this then start by figuring out why you need to do it, and adjust your approach too your threat model.

Because the most significant evidence we have lately is that in-person meetings or dead drops and other low tech means are how you avoid being tracked.

Turning on any sort of radio transmitter is just turning on a big flash light into the sky.

Turning on anything relatively uncommon is even worse: normal people have cellphones and use them. They don't use LoRa devices, there aren't a lot of LoRa devices and someone who only uses LoRa devices will stand out in any dataset.