those longitudinal electical waves sure are intersting for ftl comm.
Reading that paper, the writer is neglecting the difference between phase and group velocity. Phase velocity (wavelength/frequency) may exceed free space light speed with impunity. Group velocity, the speed at which signal and energy propagate, must be <= C, unless a whole lot of physicists are wrong.
Buried deep in the text I found this gem, placing 'scalar waves' within a well documented sub field of electromagnetism:
According to this definition, the Tesla experiments were near-field (characterized by longitudinal waves) and those of Hertz were far-field (characterized by transverse waves).
I also found many statements clearly the result of drinking kookaid.