Dec 13 2018 Eighteenth meeting of Informal Working Group Four (IWG-4) Regulatory Issues 11:00 am - 4:00 pm EST Teleconference Teleconference Only: 1-888-858-2144 or 646-746-3008 Participant Code: 10271972 Public Notice Contact Clay DeCell, telephone: 202-418-0803 Allen Yang, telephone: 202-418-0738 Larry Olson, telephone: 202-418-2142 Tags: International Treaty Spectrum Allocation