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Antenna Notes: VHF/UHF |
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2 X 3 = 6 |
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Moxon Rectangles for 6 Meters |
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6-Meter B-Antennas: A Dipole and a 2-Element Beam |
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Experimental Omni-Directional Antennas for 6-Meters |
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Route 66: 6-Meter 6-Element OWA Yagis in 9 Versions |
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The 64-(Euro-)Dollar Question |
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Phased Yagis, EDZ Beams, and Landstorfer-Sacher Yagis |
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The Half-Square on 2 Meters: Part 1:
A Bi-Directional Vertical Antenna |
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The Half-Square on 2 Meters: Part 2:
Half Square Beams
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The Half-Square on 2 Meters: Part 3:
Bobtail Curtain Parasitic Beams |
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Improved Antenna Performance for VHF FM: Some Basics, Some Options, Some
Hurdles |
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Some J-Poles I Have Known - Part 1:
Why I Finally Got Interested in J-Poles and Some Cautions in Modeling Them |
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Some J-Poles I Have Known - Part 2:
The Varieties of Twinlead J-Poles and Some Performance Standards |
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Some J-Poles I Have Known - Part 3:
The Effects of Element Diameter and Match-Section Leg Spacing
on Standard and Non-Standard J-Poles |
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What is a Slim Jim? |
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Is COCO Your Cup of Tea?
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Modeling Biconical Antennas |
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The Moxon Rectangle on 2 Meters |
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Building a 2-Meter Moxon |
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Simplifying the Turnstile Moxon Rectangle Fixed-Position
Satellite Antennas |
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Some Notes on Turnstile Antenna Properties |
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What's Wrong With This Turnstile Stack? |
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Notes on the Batwing Part 1:
Basic Batwing Properties |
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Notes on the Batwing Part 2:
Uni-Directional and Omni-Directional Batwings |
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Notes on the Batwing Part 3:
Modeling Issues with the Batwings |
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Notes on the OWA Yagi |
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Expanded Coverage for the 6-Element 2-Meter OWA Yagi:
142-150 MHz
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In Pursuit of Better VHF Quad Beams: A Work in Progress |
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Notes on Medium-Length 2-Meter Quads and Yagis |
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Circling the Square Quad |
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The Quad Beam as an Amateur Satellite Antenna |
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A Collection of 220-MHz Yagi Designs |
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A Collection of 220-MHz Yagi Designs - Part 1:
Utility Beams: Boom Lengths under 100"
and from 3 to 8 Elements |
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A Collection of 220-MHz Yagi Designs - Part: 2
Medium-Length Boom Beams: Boom Lengths from
140" to 220" and from 12 to 14 Elements |
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A Collection of 220-MHz Yagi Designs - Part 3:
Very Long Yagis: Boom Lengths from 235" to 596"
and from 16 to 33 Elements |
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A Collection of 220-MHz Yagi Designs - Part 4:
Special Designs: Equal-Length Directors, Quagis
and Multiple Reflectors
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Multiple Reflectors for Long-Boom Yagis
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Appreciating DL6WU Wide-Band Long-Boom Yagi Design: Some
Preliminary Notes |
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Long-Boom Yagi Sidelobe Suppression |
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Sidelobe Attenuation and Suppression: Part 1 |
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Sidelobe Attenuation and Suppression - Part 2:
Some Further Notes on 12-Element Yagis |
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Sidelobe Attenuation and Suppression - Part
3: Some Further Notes on 20-Element Yagis |
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Preliminary Studies of Long-Boom Yagis for 420-450 MHz |
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Long-Boom Trimming Yagis: An Accumulation of Data Main
Text |
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Long-Boom Trimming Yagis: An Accumulation of Data Reference
Graphs |
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Long-Boom Yagi Rules of Thumb: A Comparison with
Modeling Data |
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2-Meter Yagi Stacks - Part 1: 6- to 18-Element OWA Examples |
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2-Meter Yagi Stacks:
Part 2: 9- to 18-Element DL6WU Examples |
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70-CM Yagi Stacks Part 1: 10- to 40-Element DL6WU Examples
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70-CM Yagi Stacks Part 2: 10- to 40-Element VK3AUU Examples |
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A 70-CM Wide-Band, Long-Boom Yagi with High Sidelobe Suppression |
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Scaling and Adjusting VHF/UHF Yagis |
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An OWA Family of 2-Meter Yagis From 6 to 12 Elements: Part 1: A Comparison of 12-Element Yagi Designs |
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An OWA Family of 2-Meter Yagis From 6 to 12 Elements: Part 2: The Entire Family
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Extending the 2-Meter OWA Family
Part 1: 13 to 20 Elements and a Self-Limiting Design |
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Extending the 2-Meter OWA Family
Part 2: Gain, Element Population, and Hybrid Designs |
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Extending the 2-Meter OWA Family
Part 3: Increasing OWA Gain vs. Preserving Sidelobe Suppression |
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Notes on a 6-Element Wide-Band 2-Meter Yagi
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The OWA Family Moves to 220 |
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Wide-Band Utility Yagis for 420-450 MHz - Part 1. 4- and 6-Element Models |
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Wide-Band Utility Yagis for 420-450 MHz - Part 2. An 8-Element Model |
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A 2-Meter/70-Centimeter Dual-Band Yagi for the Home Builder |
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Some Basics of Very-Wide-Band Yagi Design - Part
1: A Study of Very-Wide-Band Crossed-Element Yagi Performance |
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Some Basics of Very-Wide-Band Yagi Design - Part 2:
Very-Wide-Band Planar Yagi Performance |
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Modeling the Double-Diamond for UHF |
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A Diamond Jubilee |
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Corner Reflectors Revisited:
Part 1: A Comparison With a Good Yagi |
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Corner Reflectors Revisited:
Part 2: The Evolution of a Model |
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Corner Reflectors Revisited:
Part 3: Optimizing the Model |
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Corner Arrays for Personal Communications
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The 3-D Corner Reflector |
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Split or Continuous LPDAs for Personal Communications? |
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Planar Reflectors:
Part 1: The Planar Reflector and the Dipole |
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Planar Reflectors:
Part 2: Phased Dipoles and Rectangles |
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Planar Reflectors:
Part 3: Bobtails and Diamonds |
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Planar Reflectors:
Part 4: Rod or Bar Reflectors |
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Planar and Corner Reflectors Revisited |
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Corner Reflectors Revisited Again:
Part 1: A
Systematic Look at Planar Reflector Sides |
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Corner Reflectors Revisited Again:
Part 2: A
Non-Systematic Look at Some Corner Variations
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Corner Reflectors Revisited Again:
Part 3:
Rod-Based Corner Reflectors |
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Corner Reflectors Revisited Again:
Part 4:
Variations on Standard Corner Reflectors |
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Corner Reflectors Revisited Again:
Part 5:
The Very-Wide-Band Corner Reflector |
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The Prismatic Polyhedron and the Planar and the Corner Reflector : Part 1 |
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The Prismatic Polyhedron and the Planar and the Corner Reflector
: Part 2 |
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The Prismatic Polyhedron and the Planar Reflector Supplementary Data |
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"Plate Dipoles and Prismatics," by Dan Handelsman and David Jefferies |
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"Plate Dipoles and Prismatics Revisited," by David J. Jefferies and Dan Handelsman |
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"Prismatic Polyhedron Antenna Measurements at Low GHz Frequencies," by David J. Jefferies
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"Cage Dipoles and the Prismatics," by Dan Handelsman and David Jefferies |
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Special Needs Call for Special Antennas: The X-Array |
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Modeling the Dual Rhomboid -
Part 1: The 1296 MHz Version from QST |
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Modeling the Dual Rhomboid - Part 2: Will the Real Laport Please Stand Up |
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Modeling the Dual Rhomboid - Part 3: Some Standards of Comparison |
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High-Gain, Wide-Band Yagis for 10, 6, and 2 Meters |
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Quagi and Yagi on 2 Meters: Some Preliminary Notes |
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A 3-Moxon Polling Array for 914 MHz |
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Horizontal Polling Arrays
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A Short Note on Tilted Vertical VHF Antennas |
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The Case of the Curly Collinear |
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A 100-1000 MHz "Utility" LPDA |
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CAP Emergency-Beacon Direction-Finding Antennas |
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Some Notes on FM BC Antennas - Part 1: A Few Basics |
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Some Notes on FM BC Antennas - Part 2: A Few Possible Yagi Beam Designs |
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Some Notes on FM BC Antennas - Part 3: Some Ideas for Home-Built Beam Antennas |
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Some Notes on FM BC Antennas - Part 4: Some LPDA Options |
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Some Notes on FM BC Antennas - Part 5: The Batwing Antenna and Array |
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LPDAs for the 400-800-MHz Television Range - Part 1: An Ideal But Impractical Antenna |
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LPDAs for the 400-800-MHz Television Range - Part 2: A Practical Antenna |
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Notes on Axial-Mode Helical Antennas in Amateur Service |
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Notes on Axial-Mode Helical Antennas in Amateur Service - Part 1: Helix Basics, Modeling Issues, and Short Helical Antennas Over Perfect Ground |
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Notes on Axial-Mode Helical Antennas in Amateur Service - Part 2: 10- and 15-Turn Helical Antennas Over Perfect Ground and Modeling Helices in NEC-2 |
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Notes on Axial-Mode Helical Antennas in Amateur Service - Part 3: Axial-Mode Helices above Real Ground and Alternatives to the Helix for Circular Polarization |
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Notes on Fixed Satellite Antennas |
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Some Overlooked Antenna Basics for DX and Off-World
Communications
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