Single sideband, lower. Same as USB but the audio lives below the carrier frequency.
A narrow ragged band with no carrier line, on the lower side of the tuned point.
Ham HF below 10 MHz (80 m / 40 m voice nets).
SPECTRA synthesises SSB (Lower) in your browser, so you can watch its waterfall signature and hear it demodulated without any radio hardware.
Open the live receiver →