How do I finish a broadcast? Blast Radio September 12, 2022 16:47 Updated Press the red button on your Blast Box. Related articles Updating Your Firmware (Blast Mic) I finished a broadcast. Why doesn't the mobile app show the broadcast? What can I do if my my Blast Box can't connect to my network? I am live. How can I hear my broadcast? Comments 0 comments Please sign in to leave a comment.