FCC Method of Moments - SBE Chapter 24

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Example Tower Msd Msd Msd Feed Calc Model Model Model Model Model Model R X X X Height % of 84.6 R R % dev X X dev 1 39.1 60.2 40.3 19.9 88.8 105.2 39.1 -0.12 13.8 -6.15 2 39.8 61.0 44.5 16.5 88.5 104.9 39.8 -0.09 11.6 -4.89 3 38.7 50.0 33.9 16.1 88.2 104.5 38.6 -0.20 9.8 -6.26 4 37.6 45.8 34.8 11.0 88.0 104.3 37.6 -0.05 8.3 -2.67 5 39.7 60.2 46.6 13.6 88.6 105.0 39.6 -0.17 12.0 -1.56 6 38.7 43.2 38.1 5.1 88.2 104.5 38.7 0.03 10.0 4.92 7 39.0 58.5 38.6 19.9 90.2 106.9 39.0 -0.12 20.9 0.94 Model R’s now within 0.1 Ohm of measured R’s Model tower heights at 104% to 107% of actual Model lumped inductance less than 10 uH
Modeling Pattern Shape Defined by Formula n E( , ) k E f ( ) S cos cos( ) theo i1 i The Sum of Individual Tower Fields – Field ratio and phase for each tower – Specified in construction permit i (FCC Rules 73.150) i i i
Page 1 and 2: FCC Method of Moments Licensing AM
Page 3 and 4: Classic AM “Proof” Construction
Page 5 and 6: Classic “AM “ Proof Pattern Sha
Page 7 and 8: Could This Cumbersome Process be Im
Page 9 and 10: “Method of Moments” Applicable
Page 11 and 12: “Method of Moments” In Plain En
Page 13 and 14: “Method of Moments” NEC Modeled
Page 15 and 16: “Method of Moments” NEC Modeled
Page 17 and 18: )cos cos (1 cos ) sin cos( ) ( G G
Page 19 and 20: NDA Base Impedance Determined by: -
Page 21 and 22: Back to “The Task” FCC Method o
Page 23 and 24: Example GEOMETRY Wire coordinates i
Page 25 and 26: Example IMPEDANCE normalization = 5
Page 27 and 28: Verifying the Model With Series Ind
Page 29 and 30: Example GEOMETRY Wire coordinates i
Page 31 and 32: Example Lumped loads resistance rea
Page 33 and 34: Verifying the Model Adjust Tower Im
Page 35 and 36: FCC Requirements - Tapered towers m
Page 37: Example Two turn lightning loops pl
Page 41 and 42: Modeling Credit to Jerry Westburg:
Page 43 and 44: Example MEDIUM WAVE ARRAY SYNTHESIS
Page 45 and 46: Example C : \ D o c u m e n t s a n
Page 47 and 48: DA FCC “302” Location - from Su
Page 49 and 50: FCC Requirements Determining “Pro
Page 51 and 52: Sampling System The Sampling System
Page 53 and 54: Sample Lines Verifying Length and I
Page 55 and 56: Example Sample line measurements wi
Page 57 and 58: Toroid Verification Toroids R F Sou
Page 59 and 60: FCC Requirements - Sample line leng
Page 61 and 62: Maintenance At Least Once Every 24

FCC Method of Moments - SBE Chapter 24

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