Technical Articles from Afar

Technical Articles from Afar...

The following articles, spreadsheets, and software resources have been curated from across the web. This collection will continue to expand over time.

Antenna Design Spreadsheets etc.

J-Pole Antennas.xlsx
VHF-UHF Collinears.xlsx
Wire Antennas.xlsx
Beams.xlsx
HF OCFD.xlsx
Special and Mobile.xlsx

Dipoles etc.

A Wide Spaced-Fan Inverted Vee For 80-40-20m For Field Day.pdf
Modeling a 80-40-20 Fan Dipole.pdf
Fan dipole.pdf
Multiband Dipole.pdf
What happens if you fold the ends of a dipole.pdf
The Multi-Band Wire Antenna Candidates.pdf

EFHW @ OCFD

FHW Presentation-v2.pdf
The End Fed Half Wave Antenna and Balun.pdf
AI2F 40m EFHW Measurements.pdf
BH7JYR EFHW Xformer Efficiency Calc.xlsx
160m vs. 80m Isolated Off-Center-Fed Antennas.pdf
Short 40m EFHW.pdf

J-poles and Collinears

10m collinear j-pole.pdf
10m j-pole.pdf
20m j-pole.pdf
DUAL BAND Aluminum J-POLE 144_440Mhz_Build.pdf
HF Coax-J-pole_calculator.xlsx
RadCom J-Pole.pdf
Roll-Up Portable jpole.pdf
VHF-UHF Dual-Band J-Pole.pdf
wb3ayw 146-440 collinear.xls
wire j-pole 2m_70cm antenna Calculator.xls
wire j-pole10m-80m antenna calculator.xls

Verticals

Ground Plane for 2m & 70cm.pdf
A Closer Look at Vertical Antennas With Elevated Ground Systems.pdf
DX GROUND PLANE ANTENNA.pdf
Vertical or Horizontal-Slide Show.pdf

Radial Systems

Elevated Ground Systems.pdf
An Experimental Look at Ground-HF Systems for Verticals.pdf
How many radials do I need for a vertical antenna.pdf

RF Chokes, Baluns etc.

Cost Effective Chokes (GM3SEK).pdf
Coax Chokes PPT.pdf
2018 Choke Cookbook.pdf
How to Measure the Choking Impedance.pdf
BALUNS and FERRITES.pdf
BALUNS-Choosing the Correct Balun.pdf
CHECK YOUR FERRITES WITH YOUR SWR ANALYZER.pdf
FERRITE CHOKE OPTIONS.pdf
Measured Data for Ferrite Chokes.pdf

EME

EME Presentation.pdf
Low Power EME.pdf (50W on 70cm)
Getting Started on 2m EME.pdf
Getting Started in EME.pdf
LNA Optimization.pdf

EE Stuff and Tools

2 & 3 Way Addams Splitters.xlsx
Amidon Toroid Calculator (exe)
BJT Bias Calculator (exe)
JFET Bias Calculator v2.1.xlsx
Get the most from your Antenna Analyzer.pdf
Measure Impedances Directly with 8753 VNA.pdf
Measurements in a Non-50 Ohm Universe.pdf
Resistive Arrenuators.pdf
Sensitive RF Current Sensor.pdf

Misc and Other

Understanding Propagation.pdf
The Little Pistol's Guide to HF Propagation.pdf
Clean, Punchy, Competitive Contest Audio Without Splatter.pdf
Demystifying ALC.pdf
K6XX AmpTalk.pdf
Killing Receive Noise.pdf
USB Audio Interfaces for Digital Modes.pdf
A Ham's Guide to RFI.pdf

Design and Content
AI2F & KR4DRH

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