For the installation of an RF communication antenna, what is the recommended practice?

Installing an RF communication antenna on the highest possible part of the vehicle is recommended because it maximizes the antenna's range and performance. The elevation helps ensure that the antenna has an unobstructed line of sight for radio wave transmission and reception, which is essential for optimal communication. Higher placement reduces the interference caused by obstacles like the vehicle's body, other structures, and terrain, leading to better signal quality and improved coverage.

In contrast, placing the antenna on a flat surface or near the dashboard can lead to significant signal degradation. These positions may be obstructed by the vehicle itself or other components, diminishing the effectiveness of the antenna. Installing the antenna inside the cabin can severely limit its performance due to interference from the vehicle's metal body and other electronic systems, which can reflect or absorb radio waves. Thus, the recommended practice of positioning the antenna at the highest possible point on the vehicle is crucial for ensuring the best communication capabilities.