The Chiefs of the FCC's Office of Engineering and Technology and Wireless Telecommunications Bureau released a Public Notice (DA 11-444) on Tuesday that requests comment on the bands identified by the National Telecommunications and Information Administration (NTIA) for possible reallocation for wireless broadband.
The bands include 1695-1710 MHz and 3550-3650 MHz, as well as several additional bands that potentially could be used for wireless broadband. These include 1755-1850 MHz, 4200-4220 MHz and 4380-4400 MHz.
Reallocation of the 1695-1710 MHz band concerns local and state emergency agencies, as well as private weather services such as Accuweather, that downlink weather satellite data using frequencies within that band. If the band were to be reassigned for wireless broadband, the FCC would only protect areas from harmful interference within a 72 to 121 km exclusion zone surrounding 18 Federal earth stations.
In the NPRM, the FCC asks for comment on five issues, including how might the conditions placed on the bands [exclusion zones] affect their utility for broadband use, would it be possible for broadband services to share use of each band with Federal users. Also, it asks what techniques would be most effective for sharing [coordination in time, geography, or policy, and /or cognitive technologies]. It further states that if sharing were not feasible, what process might be used "to relocate or phase out incumbent users" [Federal and non-Federal]. It also asks for suggestions for frequency bands that might be used for candidate relocation.
Refer to the Public Notice for a description of how the bands are currently being used and what exclusion zones and other restrictions or relocation may be necessary to use these frequencies for wireless broadband.
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Doug Lung is one of America's foremost authorities on broadcast RF technology. As vice president of Broadcast Technology for NBCUniversal Local, H. Douglas Lung leads NBC and Telemundo-owned stations’ RF and transmission affairs, including microwave, radars, satellite uplinks, and FCC technical filings. Beginning his career in 1976 at KSCI in Los Angeles, Lung has nearly 50 years of experience in broadcast television engineering. Beginning in 1985, he led the engineering department for what was to become the Telemundo network and station group, assisting in the design, construction and installation of the company’s broadcast and cable facilities. Other projects include work on the launch of Hawaii’s first UHF TV station, the rollout and testing of the ATSC mobile-handheld standard, and software development related to the incentive auction TV spectrum repack.
A longtime columnist for TV Technology, Doug is also a regular contributor to IEEE Broadcast Technology. He is the recipient of the 2023 NAB Television Engineering Award. He also received a Tech Leadership Award from TV Tech publisher Future plc in 2021 and is a member of the IEEE Broadcast Technology Society and the Society of Broadcast Engineers.