Tuesday, May 31, 2016

Understanding Antennas For The Non-Technical Ham

I haven't had time to review this book, but wanted to add it to my reading list.

Source: Hamuniverse

Understanding Antennas For The Non-Technical Ham
A Book By Jim Abercrombie, N4JA (SK)

Illustrations by Frank Wamsley, K4EFW
Edited by Judy Haynes, KC4NOR
Copyright July 2005. Second Edition

Edited for the web , N4UJW
Editors Note: This is a book length web article provided by the author FREE for all hams.
This is copyrighted material and is the property of Hamuniverse.com and/or the article author and is to be used only for personal non-profit educational use.
You may download a pdf copy of it here....74 pages!

It is HUGE!
Bookmark this page for future reading or see more options for saving at bottom of page!
The original book contained 60 pages and illustrations.
They are all here!
Many of the antennas described here are in project form on this web site.

Here are some of the main topics in the book that you will learn more about.

Antenna systems, antennas, simple antenna formulas, basic antenna theory, feed-lines, matching units, how antennas work, polarization of electromagnetic waves, frequency, the ionosphere and modes of propagation, Ground-Wave Propagation, Direct Wave or Line of Sight Propagation, Propagation by Refraction,

Skywave Propagation, Greyline Propagation, Long Path Propagation, ham bands propagation, antenna myths, standing wave ratio, real antenna systems, Flat Top Dipole, Inverted-V Dipole, Dipole Shape Variations, Calculating the Length of a Half-Wave Resonant Dipole, The Decibel, Resistances and Reactance, Feeding Dipoles Efficiently,

Cause of Feed-Line Radiation, Baluns, Other types of dipoles, Shortened Loaded Dipole,

All Band Dipoles, Sloping Dipole, Folded Dipole, Double Bazooka Dipole, Broad-Banded Coax-Fed Fan Dipole, Two-Element Collinear Dipole, Four-Element Collinear Dipole, Coax-Fed Dipoles Operated on Odd Harmonic Frequencies, Three Half-wave Dipole, All Band Random Length Dipole, All Band Center-Fed Random Length Dipole,

A Two-Band Fan Dipole, Trapped Dipole for 75 and 40 Meters, The Extended Double Zepp Dipole, The G5RV Dipole, Off-Center Fed Dipoles, One wavelength Off-Center Fed Dipole, Carolina Windom, Windom Dipole (Fritzel Type), End-Fed Antennas, End-Fed Zepp, Alternate Method of Feeding an End-Fed Zepp, End-Fed Random Length Antenna, The Half-Sloper antenna, Vertical antennas, Ground Mounted Trapped Verticals, Disadvantages of Using Quarter-Wave Verticals, Long and Short Verticals,

Unscientific Observations of Verticals, The Inverted-L Vertical , Vertical Mobile Antennas, HF mobile antenna comparisons, One wave-length single loop antennas, Horizontally Oriented Loop, Vertically Oriented Single Loop for 40 and 80 Meters,

Single-Element Vertical Delta Loop, Directional beam antennas, Monoband Yagi, Three-Element Yagi, Trapped Multi-band Yagis, SteppIR Antenna, The Log-Periodic Array,

Directional Cubical Quad and Delta Loop Antennas, Single Band Cubical Quad, field-strength meter, The Quagi, Gain vs front to back radio, Feed lines, Antenna Safety,

Erecting Antennas on Masts, Tower Safety, Quarter Wave Matching Sections of 70-ohm Coax chart, and much more!

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