96. Antenna Height Restrictions. We propose, as discussed below, that the flexible antenna height rules that apply to AWS-1 should generally also apply to AWS-3. Additionally, because we do not propose to authorize fixed operation in the 1695-1710 MHz and 1755-1780 MHz bands, we do not expect any special antenna height restrictions are needed for those bands.
97. Base stations. Specific antenna height restrictions for AWS-1 base stations are not set forth in Part 27 of our rules. However, all part 27 services are subject to
98. Fixed stations. Section 27.50(d)(4) specifies a height restriction of 10 meters for fixed stations operating in AWS-1 spectrum, and was deemed necessary to protect Federal operations in the 1710-1755 MHz and adjacent Federal bands. The height restriction was not applied to the AWS-4 band. Here, the 1695-1710 and 1755-1780 MHz bands are adjacent to the AWS-1 band and the Federal operations that necessitated a height limitation for AWS-1 fixed stations, whereas the 2020-2025 MHz band is not. Moreover, in defining the Protection Zones, CSMAC's assumptions did not include commercial fixed uplinks. We therefore propose not to authorize fixed stations in the 1695-1710 MHz and 1755-1780 MHz bands; thus no height limit is necessary. We believe no such limit is necessary for fixed stations in the 2020-2025 MHz band, and we propose to apply the same rules that govern low-power fixed stations in the adjacent AWS-4 band. We seek comment on this proposal. Commenters should address the costs and benefits of this proposal and of any proposed alternatives.
99. Power Limits. As discussed below, we generally propose to apply existing AWS-1 power limits to the AWS-3 downlink and 2020-2025 MHz uplink bands, which CSMAC did not analyze. For AWS-3 uplink bands with NTIA recommended Protection Zones, within which commercial use must be coordinated successfully with Federal users prior to operation, CSMAC made technical assumptions about commercial operations that are set forth in Appendix 3 of the WG1 Final Report. Specifically, CSMAC assumed baseline LTE uplink characteristics. We are not proposing technical rules to require AWS-3 licensees to comply with any particular industry standard such as LTE. Nonetheless, we believe some technical rules must accommodate CSMAC's assumptions, or the Protection Zones might have to be redrawn.
100. Base Stations. The current AWS-1 and AWS-4 rules limit base station power in non-rural areas to 1640 watts EIRP for emission bandwidths less than one megahertz and to 1640 watts per MHz EIRP for emission bandwidths greater than one megahertz, and double these limits (3280 watts EIRP or 3280 watts/MHz) in rural areas. The same limits apply to broadband PCS stations, and in our experience have provided good service while avoiding harmful interference. Further, the higher power limit for rural areas may promote the Commission's goals of furthering rural deployment of broadband services. Therefore, we propose that
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