Which of the following is NOT an advantage of high frequency carrier waves?

High-frequency carrier waves are known for several advantages that enhance communication systems. One critical benefit is increased bandwidth, which allows for the transmission of more data simultaneously. This attribute is essential in applications requiring high data rates, such as video streaming and real-time communication.

Another advantage is better distance coverage. High-frequency waves can propagate over longer distances due to their higher energy, making them suitable for various applications, including long-range communications. This capability is especially relevant in unmanned systems where reliable data transfer over distances is vital.

High-frequency waves also offer greater information capacity. The ability to transmit more bits of information per unit of time directly correlates to the higher frequencies used, making it favorable for applications needing to handle large amounts of data quickly.

In contrast, wave congestion is generally more associated with lower frequency ranges where multiple signals can overlap, leading to interference. As frequency increases, the wavelength decreases, which can result in less congestion and reduced interference when managed correctly. Therefore, less wave congestion is considered a significant advantage of using high frequency carrier waves, making the choice of this option as "not an advantage" appropriate.