Where should the 288-PW 18-inch cellular antenna be mounted on an RV?

The 288-PW cellular antenna mounts on the RV's back ladder with the included stainless steel L bracket and U-bolts. Mount the antenna as high as possible, but not higher than any other object on the roof of the RV.

Why do cell antennas need to be installed vertically or horizontally? Does it make a difference in performance if an antenna is not installed properly?

There are three types of polarization for all transmitted RF energy (cell signals) - vertical, horizontal and circular.

The type of polarization is dictated by the transmitting antenna; virtually all cell towers use vertical dipoles. This is why

Land Based Omni-Directional Cellular Antennas - Knowledgebase Articles

Where should the 288-PW 18-inch cellular antenna be mounted on an RV?

Why do cell antennas need to be installed vertically or horizontally? Does it make a difference in performance if an antenna is not installed properly?