Most of the populated parts of the world have cellular network coverage. You have likely seen base station antennas at both rooftops and in towers, but have you reflected on what the different boxes are?

In the following short video, I take you on a tour of a 4G cell site in Stockholm, where there are antennas and radios for the 700-900 MHz, 1.8+2.1 GHz, and 2.6 GHz bands.