switch from analog to digital transmission in order to attain the necessary signal fidelity in the narrower channel. To facilitate the transition to digital TV and to accommodate narrower channels in the 2 GHz band, we propose to modify the rules in Section 74.637 to permit digital modulation in all TV BAS bands. The rules for aural BAS in Section 74.535 create a situation similar to that described above for TV BAS. Specifically, Section 74.535 allows the use of digital modulation by aural BAS licensees in the 18 GHz band but does not address such use in the 944-952 MHz band. We believe that aural BAS licensees could benefit from the ability to use digital modulation techniques in all bands. Such
necessary signal fidelity in the narrower channel. Therefore, primarily to facilitate the transition to digital TV and to accommodate narrower channels in the 2 GHz band, the Commission proposed to modify the rules in Section 74.637 to permit digital modulation in all TV BAS bands. In the Notice, the Commission also stated that the rules for aural BAS in Section 74.535 create a situation similar to that for TV BAS with respect to digital modulation because it allows the use of digital modulation by aural BAS licensees in the 18 GHz band, but does not address such use in the 944-952 MHz band. The Commission stated its belief that aural BAS licensees could benefit from the ability to use digital modulation