Fcc cfr title 47 part 15 subpart c section 15.247 July 8, 2019 16 32 64 128 Fcc title 47 cfr part 15 subpart b Fcc 47 cfr part 15 subpart c Fcc 47 cfr part 15 subpart b Fcc 47 cfr fcc part 15 subpart b 47 cfr fcc part 15 subpart b class a
