PSK31 Bandwidth

PSK31 is one of the hottest new digital modes. It is a keyboard to keyboard mode of operation which is much narrower in bandwidth than most digital modes and in fact uses little more spectrum than a CW signal. The following displays reflect the spectrum display of properly transmitted signals.

BPSK Bandwidth Of Properly Transmitted Signal

QPSK Bandwidth Of Properly Transmitted Signal

FFT-Spectrum versus time, frequency and signal intensity

FFT-Spectrum versus frequency and signal intensity