Prologue
Thank you for reading this work. It was written over a seven year period, and represents the most through coverage of the art of TEMPEST in existence. With the use of zone approaches, TEMPEST source suppression techniques are slowly fading away. I always viewed TEMPEST as simply another way of looking at communications systems. Maybe you will look at it the same after reading what is presented.
The text presents an overall introduction to classical information theory, basic communications theory, as well as TEMPEST design. Related issues in modulation, telecommunications, telemetry, shielding, and propagation are covered as they apply to TEMPEST control. The theoretical relationships presented form the basis of all TEMPEST testing and test requirements, as well as describing the means of escape for controlled signals from within the TEMPEST protected container.
The information in this book is presented in general terms. To specifically address the exact TEMPEST relationship would be outside the classification level of this text. However, by presenting the necessary information in classical form, the subject matter can be effectively covered in a non-classified environment.
Students more interested in practical applications rather then theory should consider this text as an overview, treating each area with respect to the potential for more in-depth review as needs dictate. Theoreticians and signal analysis experts will find the mathematical relationships and definitions extremely useful in a single source reference.
Bruce Gabrielson
Chesapeake Beach, MD
1998
Chapter 1...........................................................What is TEMPEST
Chapter 2...........................................................Basic Communications Theory
Chapter 3...........................................................Modulation in Telemetry
Chapter 4...........................................................Wave Propagation & Information
Chapter 7...........................................................TEMPEST and RED/BLACKMechanical Design
Chapter 8...........................................................TEMPEST PC Board Design
Chapter 10..........................................................Basic Active and Passive Filters
Chapter 14..........................................................Shielded Wires and Wiring
Chapter 16..........................................................Finding and Fixing Problems