It always amazes me how simple and inexpensive this act is, yet hugely benefical to the health of many. As you can see from the photo below, the school and neighbouring town are not that far away from the mast site (within two miles) and despite the area being rural there are quite a few houses located only a few hundred meters away from the mast itself.
Mobile phone mast
View from mast site to school and town below
Pyrite chispa before programming and planting