If you happen to look up at any cell tower, you will likely see these flat, rectangular antennas mounted all around the tower. These are the antennas that communicate with your cell phone or other device using an array of radio frequencies. Today, these guys were removing some obsolete antennas and other equipment from this tower.
I spoke with these guys about a week ago as I passed by on my bicycle, it’s nice to chat with people who know and understand the technology these antennas are using today. Some of these panel-tennas are tri-band antennas which means that the antenna is capable of using the 5G AND 4G bands at one time.
Some VHF/UHF ham radio antennas are also capable of tri-band operation. They were deep into whatever they were doing as you can see by the many coaxial cables hanging down from the antennas. If I were in better health, I would pursue this work! I’ve been interested in radio since the late 1970s.