Most hackers tend to focus on the intricacies of hardware, software, networks or algorithms. However, an understanding of the Physical Layer of a network is just as important as all of the higher layers which rest upon it. If you've ever wondered what causes interference on your radio or wireless network, or just how those antennas manage to get signal from one point to another, this panel discussion is for you. Bring your questions, no matter how basic or advanced, and our panel of physicists and radio experts will (attempt to) answer them. We will cover these topics with an eye to their applications to real world problems in wireless communications, hardware installation and site survey.