Explore SDR techniques using the HackRF in this 28-minute conference talk from Defcon Wireless Village 2014. Dive into hardware design, differential signaling, and external RF interfaces. Learn about full duplex operation, operating frequency considerations, and local oscillator implementation. Discover antenna power management techniques and delve into both low and high frequency RFID applications. Gain valuable insights into advanced software-defined radio concepts and practical implementations for wireless enthusiasts and security professionals.