True or False: The range control on a RADAR unit determines the length of the transmitted beam.

The statement that the range control on a RADAR unit determines the length of the transmitted beam is false, which is why the correct answer is B. The range control primarily adjusts the distance over which targets can be detected by the radar system, allowing the operator to select how far away they want the radar to be effective. It essentially sets the "window" or distance to display targets on the screen, but it does not influence the physical properties of the beam itself.

The length of the transmitted beam is determined by other factors such as the design of the antenna, the frequency of the radar, and the gain settings among others. These elements affect the radar's resolution, coverage area, and ability to pick up distant objects, but the range control's role is distinct and does not alter the actual beam length.

Being aware of how the radar functions and the relationship between various controls and physical properties is crucial for effective radar operation. Therefore, understanding that range control is about limiting the operational distance for detected targets, rather than altering the beam length, is essential knowledge for any radar operator.