True or False: Obstacles in the transmission path can cause radio frequency interference in telecommunication systems.

The statement is true because obstacles in the transmission path can obstruct or disrupt the radio signals used in telecommunication systems. When radio waves travel through the air, they can be affected by physical barriers such as buildings, trees, and hills. These structures can scatter, reflect, or absorb the radio frequency signals, leading to interference.

Radio frequency interference occurs when the signal becomes distorted or weakened, resulting in degraded performance or loss of communication. This interference is more pronounced in certain frequencies, particularly in higher frequency ranges, which tend to have shorter wavelengths and are therefore more susceptible to obstacles. Understanding this is crucial for ensuring effective communication in UAS operations, where maintaining a clear signal is essential for safety and control.

While some may consider that interference depends on specific conditions or frequencies, the fundamental principle is that any obstacle can potentially interfere with transmission, making the statement valid.