Wireless Spectrum Finder: Telecommunications, Government and Scientific Radio Frequency Allocations in the US 30 MHz - 300 GHz	The essential book for finding what frequencies are actually used for
	Modern Millimeter-Wave Technologies (Wave Summit Course)	Best source for an overview of mmW
	Ultra Wideband Signals and Systems in Communication Engineering	Best UWB overview
	Spread Spectrum Systems with Commercial Applications	The classic book that created the civil market for spread spectrum
	Spread Spectrum Communications Handbook, Electronic Edition	More detail than Dixon if you need to understand spread spectrum and CDMA
	The History of Wireless: How Creative Minds Produced Technology for the Masses
	Essentials of Modern Spectrum Management (The Cambridge Wireless Essentials Series)	Progressive thinking on spectrum policy from UK leaders
	The ARRL Handbook for Radio Communications 2008: 2008	Good source of radio technology information
	Blown to Bits: Your Life, Liberty, and Happiness After the Digital Explosion	A good overview of the modern explosion of digital communications technology
	Reference Data for Radio Engineers	The "ITT Handbook" - the classic compilation of essential information on radio technology
	Defining Vision: How Broadcasters Lured the Government into Inciting a Revolution in Television, Updated and Expanded	The true history of DTV/HDTV that the broadcasters would rather forget