Technical White Paper Links

AM Broadcasting

• Computer Simulation of AM Radio Antenna Systems - Reprint from NAB Engineering Handbook  (James B. Hatfield)

•  A Study of AM Tower Base Impedance  (James B. Hatfield)

•  Numerical Electomagnetic Code Analysis of AM Directional Antenna Nulls and the "Proximity Effect"  (James B. Hatfield)

• Relationships Between Base Drives and Fields in Broadcast Medium Wave Directional Antennas  (James B. Hatfield)

• Problems With Moment Method Modeling of AM Arrays  (James B. Hatfield)

• Relative Tower Currents and Fields in an AM Directional Array  (James B. Hatfield)

• A Study of AM Tower Base Impedance (James B. Hatfield)

• A Modern Method of Predicting AM Tower Vertical Radiation  (James B. Hatfield)

• Sample Loop Equations - ERI  (Robert Silliman)

• Demonstration of Swept Frequency Techniques for AM Antenna System Measurements SBE EXPO, September 2004  (Stephen Lockwood)

• Drawing Showing Typical Installation of AM Sample Loop  (Hatfield and Dawson Consulting Engineers)

• FCC 1939 Standards of Good Engineering Practice Concerning Standard Broadcast Stations (550 1600 kc)

• Eight Drawings Showing the Installation of a Standard Broadcast Ground System  (Hatfield and Dawson Consulting Engineers)

•  Vacuum Variable Capacitors - An Introduction to their Design, Rating and Installation - Comet

• AM Directional Antennas in a Digital World (NAB Radio Show) (Ronald Rackley)

• Evaluation and Improvement of AM Antenna Characteristics  (Ronald Rackley)

• Swept Frequency Techniques for Evaluating Antenna (Ronald Rackley)

• Efficiency Comparison: AM/Medium Wave Series-Fed vs. Skirt-Fed Radiators  (Rackley, Cox, Moser, King)

• Directional Antenna System Hardware  (Littlejohn, Rackley, Dawson)

• Directional Antennas: Instrumentation, Operation, and Maintenance (L. Robert du Treil)

• The Standard Pattern (L. Robert du Treil)

• Sampling System Design and Installation for AM Directional Antennas -- Excerpts from "Design and Installation of Sampling Systems for Antenna Monitors in Standard Broadcast Stations With Directional Antennas" (FCC)

• Physical Limitations to Directional Antenna Systems in the Standard [AM] Broadcast Band (FCC)

• Meter orientation when taking AM field strength measurements  (FCC)

• Amendment of the Rules Governing the Conversion of Radiation Patterns [to standard patterns] in the AM Broadcast Service  (FCC)

• Communications Act of 1934 (FCC)

• Negative Antenna Resistance Elements (Grant Bingeman)

• Phased Array Adjustment for Ham Radio (Grant Bingeman)

• Computer Controlled Phased Array (Grant Bingeman)

• Mutual Impedances  (Grant Bingeman)

• Mutual impedance (John Battison)

• AM ANTENNA SYSTEM CASE STUDIES FOR DRM AND IBOC DAB (Bobby Cox and James Moser-Kintronics)

• Antennas

• 73.160 Vertical plane radiation characteristics (FCC Rules)

• The Handbook of Antenna Design By A. W. Rudge, K. Milne, A. David Olver, P. Knight

• Radiation Characteristics of a Vertical Radiator (Edmund Laport)

• Straight, Uniform Vertical Radiator (Edmund Laport)

• LP AM Vertical Antenna