The adafruit product is “hat” for a Raspberry pi. I’m starting off with the TinyLora python library which I’m aware is not fully compatible (I’ve read the thread on this). If I can get basic stuff to work I can look at the code and maybe fix it. But right now, I have too many variables - is the thing working, is the library working, is my configuration correct, am I in range of anywhere? So I’m trying to reduce the uncertainty a bit.
I’d read about antenna lengths for 868 but in my ignorance assumed that longer multiples of 1/4 would be better.