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December 7, 2017 
The Honorable Ajit V. Pai 
Federal Communications Commission 
445 1211i St. SW 
Washington, DC 20554 
Dear Chairman Pai: 
WASHINGTON. DC 20510 
We write today to ask the Commission to consider permitting the use of 5G mobile broadband service for 
existing Multichannel Video Distribution and Data Service (MVDDS) spectrum licensees in the 12.2-12.7 
GHZ range. 
The Commission has worked diligently to explore new opportunities for spectrum that could be used to 
advance 5G mobile service and we appreciate those ongoing efforts. Additionally, U.S. wireless 
companies have invested billions to keep our country at the forefront of the global 5G race. 
As our global competitors increase their investments in building 5G networks, particularly in Asia, U.S. 
commitment to deploying and expanding 5G service should remain a central focus at the Commission. 
U.S. leadership in mobile technology has significantly benefitted American consumers for decades and 
our country must continue driving that innovation. 
We believe the Commission has an opportunity to build on their 5G efforts by considering the benefits of 
5G mobile broadband use in the spectrum between 12.2-12.7GHz while also working to resolve any 
incumbents' interference concerns. 
As the U.S. continues to explore new ways forward for 5G service, we look forward to monitoring the 
Commission's progress on these issues. Thank you for your consideration and please do not hesitate to 
reach out to our offices with any questions. 
Sincerely, 
cc: Commissioner Michael O'Rielly 
Commissioner Brendan Carr 
Commissioner Jessica Rosenworcel 
Commissioner Mignon Clyburn 
Michael F. Bennet 
U.S. Senator 
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