Thank you for your entry tinna,
We like your effort to make something original using the S and B to make a graphic. Unfortunately the graphic isn't strong enough, it isn't aesthetically pleasing enough or have a strong enough identity or meaning.
We feel the best route is to try with an abstract graphical element that represents 'global' 'broadcasting' or some of our values.
Try and make the logo as classy and professional as possible. Typography is most important here.