Which antenna type is associated with the shortest planning range?

The whip antenna is known for its compact size and is often used in applications that require a simple and effective solution for short-range communication. Its design typically leads to a lower gain compared to other types of antennas, such as larger directional antennas. This characteristic results in a shorter planning range, making the whip antenna ideal for mobile communications or applications where portability and versatility are more critical than long-distance signal propagation.

In contrast, options such as FM antennas, which are designed for medium to long-range transmissions, have a broader reach due to their larger size and higher gain. The OE-254 is a specific type of antenna used by military and emergency communications, generally capable of longer ranges. The Near Vertical Incidence Skywave antenna is typically utilized for long-range communications, especially over the horizon, leveraging skywave propagation.

Together, these characteristics underscore why the whip antenna is associated with the shortest planning range among the listed options.