USB
From The RadioReference Wiki
Upper Side Band - used on HF and in some parts of the VHF/UHF amateur bands. It can, at times, be found in the satellite portion of the 225-400 mhz band as well.
Upper Side Band - used on HF and in some parts of the VHF/UHF amateur bands. It can, at times, be found in the satellite portion of the 225-400 mhz band as well.