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Upper HF: Arrays and Questions

  How High is My Antenna?   Some Model Quads
  Full-Size 2-Element Quads   Quad Variations and Comparisons
  Shrunken 2-Element Quads   Multi-Band 2-Element Quad Beams
  Alternative Common Feeds for Multi-Band 2-Element Quad Beams    Stacking 2-Element, 5-Band Quads
  Monoband Quads of More Than 2 Elements   Further Notes on 3-Element Quads
  Larger Multi-Band Quads   Feeding Multi-Band Quads
  New Quad Studies   Calculating the Length of a Resonant Square Quad Loop
  2-Element Quads as a Function of Wire Diameter: Part 1: Understanding Some Quad Properties   2-Element Quads as a Function of Wire Diameter: Part 2: Automating the Design Process
  2-Element Quads as a Function of Wire Diameter: Part 3: Fatter Elements from "Mere Wire"   Automating the Design of 3-Element Monoband Quad Beams: Part 1: A Wide-Band Model
  Automating the Design of 3-Element Monoband Quad Beams: Part 2: A High-Gain Model   40-Meter Wide-Band 3-Element Quad Designs

4-Element Monoband Quad Design
Some Notes on Long-Boom Quads
  In Pursuit of Better VHF Quad Beams: A Work in Progress   Notes on Designing Large 5-Band Quads

The Quest for the Elusive TBWB4EQ
A Trap Small Quad for 12 and 17 Meters

The "Quad vs. Yagi" Question
Adjacent-Band Quad Behavior
  A 3-Band, 2-Element Spider-Supported Quad Beam   Why Not Use a 3-Band, 3-Element Quad?
  The Birdcage Antenna   Three Ways to Skin a Quad Loop
  Sneaking Up on 2-Element Common-Feed Quads Part 1   Sneaking Up on 2-Element Common-Feed Quads Part 2
  Sneaking Up on 2-Element Common-Feed Quads Part 3   Notes on the Modified Half-Loop
  Notes on Standard Design HF LPDAs   Part 1: "Short" Boom Designs

Part 2: 164'-Boom Designs
LPDA Design and Modeling Data
  Modeling LPDAs   LPCAD Designs and NEC Models of LPDAs
  NEC-2 Models of LPDAs: Some Special Considerations   11.5 LPDA Models to Start You Off

5 Strategies for Doctoring the Basic LPDA Design
Wire and Vee-Element LPDAs: The Telerana
  Some Notes on LPDA Stubs   3.5 Octave LPDA of High Potential Performance, An Antenna No One Will Build
  Long-Boom LPDAs for 14-30 MHz   3 More 14-30 MHz LPDA Designs

4-30 MHz LPDA Design Concepts
A 10-Meter LPDA - a Work in Progress
  A 10-Meter LPDA: Phase 1: From Calculations to Models   A 10-Meter LPDA: Phase 2: A Low Impedance Version

A 10-Meter LPDA: Phase 3: Element Length and Diameter
A 10-Meter LPDA: Phase 4: 3 vs. 4 Elements in an LPDA for 10 Meters

A 10-Meter LPDA: Phase 5: Preconstruction Decisions
A 10-Meter LPDA: Phase 6: A Yagi Standard and Alternative

A 10-Meter LPDA: Phase 7: Wide-Band Yagis: Element Diameter Questions
Notes on HF General Coverage LPDAs Using 30-35' Booms
  Notes on a Long-Boom General Coverage LPDA   Notes on the Extended Aperture Log-Periodic Array; Part 1: The Extended Element and the Standard LPDA
  Notes on the Extended Aperture Log-Periodic Array; Part 2: The Extended Aperture LPDA   Notes on Zig-Zag Log-Periodic Arrays: 1. Preliminaries and LPDAs
  Notes on Zig-Zag Log-Periodic Arrays: 2. The Trapezoidal Zig-Zag LPA   Notes on Zig-Zag Log-Periodic Arrays: 3. The X or Saw Tooth Zig-Zag LPA
  Notes on Zig-Zag Log-Periodic Arrays: Data Appendix   Appreciating Current Trends in LPDAs
  The V-Dipole LPDA   The L-Antenna
  The B-Antenna   17-15-12 and Simple
  A Vertical Doublet for 30-10 Meters   Notes on Hatted Vertical Dipoles for 10 Meters
  The M3KXZ 2-Element Vertical Phased Array   EDZ Beam Update
  Feeding the EDZ   The Expanded Lazy-H
  Curtains for the Extended Lazy-H   An Almost Universal HF Back-Up Antenna For the Antenna Farm That Has Everything Else
  Suppose I Could Have Only One Wire Antenna   The "Lazy-8JK" or The Collinear-Broadside-Endfire Array
  The Turnstile: An Omni-Directional Horizontally Polarized Antenna   Don't Be Phased By Phasing
  Some Notes on Two-Element Horizontal Phased Arrays   Some Notes on Two-Element Horizontal Phased Arrays Part 1: The Limits of Performance
  Some Notes on Two-Element Horizontal Phased Arrays Part 2: The Limits of Geometric Phasing   Some Notes on Two-Element Horizontal Phased Arrays Part 3: The Limits of a Single Phase Line - The ZL-Special
  Some Notes on Two-Element Horizontal Phased Arrays Part 4: Removing the Limits of a Single Phase Line by Element Matching   The HB9CV Phased Array and Gain Comparisons
  Horizontal Phased Arrays with Parasitic Directors   Tinker Toys for Adults: Some Notes and Ideas on PVC for Antenna Applications