What is what does ssb mean?

SSB stands for Single Sideband, which is a method of radio transmission used for long-range communication. In SSB transmission, only one of the sidebands of the modulated signal is transmitted along with the carrier frequency, unlike in AM modulation where both the sidebands are transmitted. SSB is used in various radio communication applications including amateur radio, maritime radio, aviation radio, and military radio. It offers advantages such as increased range, reduced power consumption, and reduced interference. SSB is also used in some forms of digital communication, such as High Frequency Data Link (HFDL) used in aircraft communication and Automatic Packet Reporting System (APRS) used in amateur radio.