FCC FM broadcasting Federal Communications Commission airing attenuation bandying book broadcast bruiting bruiting about circulation circumfusion diffraction diffusion dilution dispensation dispersal dispersion display dissemination dissipation distribution divergence evaporation evulgation expansion fade-out fragmentation insemination issuance issue mixing peppering periodical planting printing promulgation propagation publication publishing radiation radiobroadcasting reforestation resetting retimbering scattering scatterment seeding semination setting shotgun pattern sowing spattering splay spread spreading spreading abroad sprinkling standard broadcasting strewing telecasting tone control transmission transplantation ventilation vestigial transmission volatilization volume control