Mar 29 2018 Twelfth meeting of Informal Working Group Four (IWG-4) Regulatory Issues 10:00 am - 2:00 pm EDT Teleconference Teleconference Only: 1-888-858-2144 or 646-746-3008 Participant Code: 1383844 Public Notice Contact Clay DeCell, telephone: 202-418-0803 Sankar Persaud, telephone: 202-418-2441 Allen Yang, telephone: 202-418-0738 Larry Olson, telephone: 202-418-2142 Tags: International Treaty Spectrum Allocation