Blog Editor’s Note: The RNT Foundation has filed several items with the FCC concerning adjacent band interference with GPS/GNSS. Subsequent to Ligado’s most recent modification to their application, we joined a number of other organizations expressing continuing concerns.

July 18, 2018
The Honorable Ajit Pai
Federal Communications Commission
445 12th Street S.W.
Washington, DC 20554
Re: Ligado Networks LLC (“Ligado”)
Written ex parte Submission

IB Dockets No. 11-109, 12-340; RM-11681; IBFS File Nos. SES-MOD20151231-00981,
SAT-MOD-20151231-00090, SAT-MOD-20151231-00091, SES-AMD20180531-00856,
SAT-AMD-20180531-00044, SAT-AMD-20180531-00045

Dear Chairman Pai:

The undersigned organizations, representing entities that provide and rely upon critical GPS, satellite communications (“SATCOM”) services, and essential weather and other environmental data, write to inform you that the threat of harmful interference from Ligado’s
proposed ancillary terrestrial component (“ATC”) service continues to pose a significant risk of harmful interference despite Ligado’s May 31, 2018, amendments to its license modification applications in the above-referenced file numbers. (1)

The record, augmented by recent  government reports, makes clear that the interference will be particularly impactful to the countless government and commercial entities that rely on GPS and SATCOM services for aviation safety and other critical services and the many groups that receive and depend upon real-time weather and related environmental information from National Oceanic and Atmospheric Administration (“NOAA”) satellites.

Read More