I think this is true in the part 90 world, but not in part 97. There really is no FCC mandate with respect to the ARS for spectral efficiency.
73, Mark N5RFX >In a time period shorter than most of us realize, most of the VHF and >UHF bands will be all digital. The FCC is moving all other users >in that direction anyway. No more WFM, just NFM, etc. They want greater >spectral efficiency. > >Look at D-Star digital voice! It is only 6 kHz bandwidth.
