What is the radio communication mode that utilizes the basic frequency and one of the side bands called?

The radio communication mode that utilizes the basic frequency and one of the sidebands is known as SSB, or Single Sideband. In this mode, the carrier frequency and one of the sidebands (either the upper or lower sideband) are transmitted, while the carrier is suppressed. This technique is commonly used in amateur radio and for long-distance communication because it is more efficient in terms of bandwidth and power usage than traditional amplitude modulation (AM).

By reducing the requirements for bandwidth and power, SSB allows for clearer transmission over longer distances. The elimination of the carrier wave, which does not carry information, contributes to this efficiency. This is why SSB is particularly favored in environments where signal clarity is paramount, such as in aviation and marine communication, as well as in military applications.

In contrast, other modes mentioned do not utilize sidebands in the same way. For example, FM (Frequency Modulation) varies the frequency to encode information but does not involve the concept of sidebands as SSB does. Similarly, traditional AM keeps the carrier wave while modulating the amplitude, effectively using both sidebands and the carrier, which is not as efficient as SSB. CW (Continuous Wave) refers to a method of transmitting by sending a constant