Our Chief Geek recently appeared on the WLAN Professionals podcast with Keith Parsons, and gave his insight on interference and visualizing RF: http://wirelesslanprofessionals.com/005-wlw-–-visualizing-rf-reliability-in-electronics/

This weekly podcast series is great for anyone who makes a living deploying and maintaining wireless networks. Keith draws on his extensive WLAN experience–and also his extensive circle of WLAN pro buddies–to give helpful hints and knowledge for this ever-evolving subject. Check it out: http://wirelesslanprofessionals.com