Localized, nonspreading, wavelet solutions of the wave equation square
phi = 0 with group velocity v > c and phase velocity u = c2/v < c are
constructed explicitly by two different methods. Some recent experimen
ts seem to find evidence for superluminal group velocities [J. Phys. I
(Paris) 2 (1992) 1693; Phys. Rev. Lett. 68 (1992) 2421].