47 cfr part 15 subpart c 15.247 July 8, 2019 16 32 64 128 Fcc cfr title 47 part 15 subpart c section 15.247 47 cfr part 15 subpart b 47 cfr 15 subpart b 47 cfr part 15 47 cfr part 2 subpart j Cfr 47 part 15 subpart c
