We've also started a Wireless and Mobile Division here. Gradually, over the course of weeks, I started to unravel the mystery of wireless communication. It isn't that complicated. The bigger point here is that if you're not stretching, you're staying the same. Ask for the tough assignments.
Life is short.
Keep on learning. I'll be 52 when I'm finished. I try to ask people in different fields for their favorite books. I might not understand the technical aspects, but there are strands of truth running through most great books that everyone can learn from. This is one of the most interesting books I've read in a long time about leadership, change, and effective management.