I’m using an Heltec HT-M02 in my open pitch mine. I did some site survey and works just fine with two directional antennas. Now I putt 4 directional antenas and the covarage seems to be reduced.
Do you guys thing that can be something about the power of the antennas? I’m not an expert in this issue.
Following some photos of the project:
Here the datasheet of the antenna:
Please any advice will be very welcome!