Thank you for your logo idea. We would like to have a symbol that doesn't include the letters CB. Just a simple play button would look nice. Or something that indicates volume. We like your work though. Keep sending Ideas. Also CivilianBroadcast looks nice as one word.
We like #50, Try writing the words CivilinBroadcast without all caps. Its will give it a sense of youthfulness and casualness. Also, try making the play button a bit bigger and a bit more 3D looking.