FCC Method of Moments - SBE Chapter 24

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Example Tune-up: – Day, 2 towers - about 4 hours – Night, 6 towers - about 4 days More fussing required at ATU’s Some very low tower drive impedances – Measurements to characterize the array – Time to “massage” the model
FCC Requirements Determining “Proper Adjustment” – Correlation of the Method of Moments parameters and antenna monitor indications Ratio +/- 5% Phase +/- 3 degrees – Correlation of Method of Moments and measured matrix impedances Within +/- 2 ohms, +/- 4% for both resistance and reactance
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 and 38: Example Two turn lightning loops pl
Page 39 and 40: Modeling Pattern Shape Defined by F
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: DA FCC “302” Location - from Su
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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