Which modulation technique does SSB use?

Single Sideband (SSB) modulation is a refinement of Amplitude Modulation (AM) that effectively removes one of the sidebands and the carrier from the transmitted signal. This process makes it more efficient in its use of power and bandwidth. The designation "J3E" refers to the emission designator for single sideband telephony, where the "J" indicates the use of single sideband modulation and "3E" denotes single sideband phone emissions.

With SSB, the modulation provides several advantages over standard AM transmission: it reduces bandwidth, allowing for more channels in the same frequency space, and increases power efficiency since less power is used in transmission. Consequently, the correct answer is rooted in the specific terminology used by the FCC to define types of emissions, which includes SSB as J3E emissions. Thus, recognizing that SSB is directly linked to this emission designator is pivotal to understanding its application in communications.