That's a neato PCB, Paul! It's like a project board with radio built in, right?
Yes, it is a sensor node using LoRa radio for use on TTN or similar. The prototype area allows the user to choose type of sensor.
It was sold as 868MHz and claimed a 3dB gain, but it arrived in a plastic bag with no labels on it and looks identical to the 2.4GHz antennas sold for use with WiFi routers.
The 868MHz antennas I got from Aliexpress
Don't forget to take care of trace impedance to the SMA connecor.
Thanks, I've ordered the sma antenna to tryHow? I am trying to keep the PCB track between the LoRa module and the sma socket or wire antenna hole as short as possible. What else should I do?
he side gp o the boom gp
2 LayersFR4,1.6mm,1 oz,HASL,Green Solder Mask,White silkscreen