Regarding the overlap of the mast to the antenna, there should be about 1 foot of overlap as shown in this picture: The top of the pipe must stay below the decoupling radials in order for the antenna to function properly. This puts the top clamp within an inch or so of the. Abstract—Base station (BS) deployment is not a one-time endeavor, as when transitioning to higher frequency bands, coverage holes may arise, and the initial deployment may be unsatisfactory. In such cases, the deployment of additional BSs may be necessary. Below is a comprehensive overview based on the latest available information: dBi (decibels relative to isotropic) measures. Part 3—In this final installment, the author shows how to develop a good external ground system to complete your station's protection. Now that the SPGP (Single-Point Ground Panel) is con-nected through the wall to the outside world, there is still a lot of work to do. It's necessary to switch from. If you put an antenna on a tower, are they each separately grounded, or does the tower ground take care of everything that's attached to it? If everything is properly grounded, is it still best to disconnect your coax, (If able to) during an electrical storm, or is your equipment safe? Isn't there. Proper grounding of antenna towers, masts, and external support structures is essential for safety, noise reduction, and lightning and surge protection in any amateur radio station.