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Tempest Websites

TEMPEST (Transient ElectroMagnetic Pulse Emanating Surveillance Technology) is a code word and technology developed by the U.S. government in the 1950's that concerns the prevention of electromagnetic emanations from electronic equipment of sufficient magnitude to be intercepted and used by outside entities. That TEMPEST is a highly protected subject, shrouded in secrecy, is evidenced by the elusiveness of finding real information on the Internet - a large majority of the referenced pages are gone now. The sites listed below are good starting points with lots of links.

Your mission, if you should decide to accept it, is to actually locate the truly useful sites. Good luck, Mr. Phelps. This page will self-destruct in ten seconds...





  • The Complete - Unofficial TEMPEST Page - one-stop TEMPEST shopping.
  • Tempest, Inc. - TEMPEST, EMSEC CE Mark FCC electromagnetic compatibility wireless, EMC, shielding effectiveness.
  • Echelon News - NSA's "ear-in-the-sky" site.
                     (this site might be going away)
  • 497th Intelligence Group - USAF's special intelligence services.
  • Federation of American Scientists - FAS's collection of electronic security info.
  • InfoSEC - from SPAWAR Systems Center.
  • Click for more info - RF CafeComputer Security Basics
    by Deborah Russell, G. T. Gangemi
    Paperback - 464 pages
  • Deborah Russell provides a broad introduction to the many areas of computer security and a detailed description of how the government sets standards and guidelines for security products. The book describes complicated concepts such as trusted systems, encryption and mandatory access control in simple terms, and includes an introduction to the "Orange Book."

RF Cafe Software

RF Cascade Workbook
 RF Cascade Workbook is a very extensive system cascaded component Excel workbook that includes the standard Gain, NF, IP2, IP3, Psat calculations, input & output VSWR, noise BW, min/max tolerance, DC power cauculations, graphing of all RF parameters, and has a graphical block diagram tool. An extensive User's Guide is also included. - Only $35.
RF system analysis including
frequency conversion & filters

Smith Chart™ for Excel
Smith Chart™ for Visio
RF & EE Symbols Word
RF Stencils for Visio
A Disruptive Web Presence™

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