Here arethe three purchases for ttn modiin .
The Antenna I am told that people have got 70km using SF12 and this antenna Lets see if it what I get SF12 is not useful it takes too much time and low baude rate.
A heat sink for the rak831
https://sketchfab.com/3d-models/lora-gateway-draft-cefeb9d0d7014f11a42d530f176ce139
This will allow me to remove the forced air cooling Fan and pasive cooling.
The relays are for my first commercial product Off grid secure dry contacts with a multi year lifetime on bank of18650 .
lifespan Based on one status change per day. ( Lora class A or B)
Arie
