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vi COMPLETE ERCES HANDBOOK3.17 Architects, Engineers. . . . . . . . . . . . . . . . . . . . . . . . . . . . 313.18 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324 THE RULES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 4.1 FCC 47 CFR %u00a7 90.219 - Use of Signal Boosters. . . . . . . . . . . . . . 35 4.2 47 CFR %u00a7 20.21 - Signal Boosters . . . . . . . . . . . . . . . . . . . . . 44 4.3 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 455 THE CODES AND STANDARDS . . . . . . . . . . . . . . . . . . . . . . . . 47 5.1 Access to Codes and Standards . . . . . . . . . . . . . . . . . . . . . . 49 5.2 How to Determine What Codes and Standards Apply to a Particular Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 5.3 Code and Standard Scope Statements . . . . . . . . . . . . . . . . . . . 53 5.4 Codes and Standards %u2013 What%u2019s The Difference? . . . . . . . . . . . . . . 56 5.5 Types of Codes and Standards . . . . . . . . . . . . . . . . . . . . . . . 58 5.6 Equivalency, Alternate Materials & Methods . . . . . . . . . . . . . . . 59 5.7 Consolidated Approach to Code Compliance . . . . . . . . . . . . . . . 60 5.8 Understanding the Key Components of the Codes and Standards . . . . . 61 5.9 Other Codes and Standards. . . . . . . . . . . . . . . . . . . . . . . . . 996 RULES, CODES, AND STANDARDS REFERENCE TABLE . . . . . . . . . . .1057 THE MATH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113 7.1 Basics of RF Power Measurement . . . . . . . . . . . . . . . . . . . . . 114 7.2 Linear Versus Logarithmic Scales . . . . . . . . . . . . . . . . . . . . . 114 7.3 Basic Equations for Logs and Exponents . . . . . . . . . . . . . . . . . 115 7.4 Using RF Math to Calculate the Link Budget . . . . . . . . . . . . . . . 119 7.5 Allowed Decibel Math Operations . . . . . . . . . . . . . . . . . . . . . 120 7.6 Calculating Composite Power . . . . . . . . . . . . . . . . . . . . . . . 121 7.7 Free Space Path Loss. . . . . . . . . . . . . . . . . . . . . . . . . . . . 122 7.8 Indoor Environments Can Be Different %u2013 Enter the Path Loss Coefficient (or Exponent). . . . . . . . . . . . . . . . . . . . . . . 124 7.9 The Link Budget . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1247.10 Practical Application of Our New-Found Understanding of dB Math . . . 1267.11 Is There a Solution to the In-Building Coverage Problem? . . . . . . . . 1277.12 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1288 THE SCIENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129 8.1 What is Spectrum? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 8.2 Frequency Bands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131 8.3 Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132