I happened to have a similar non-portable antenna foot surplus. It's for free, just send me a message if someone is interested because currently it might end up as scrap metal.
This is seriously one of the coolest pcb's I've seen around lately.
workarounds for BUGS in ESP32 rev0 (pdf)
SQUIX diy weatherstation starting guide (pdf)
YESSSSSSSSSS we have a network status page !
transmitterpower 1 W @ 868 Mhz !?!