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Showing posts with the label Antenna Basics.

Simple Ham Radio Antennas--Antenna Basics. Post #922

Antenna Basics (http://213.114.137.49/antennas/anten.htm). (http://www.dxzone.com/cgi-bin/jump2.cgi?ID=5408). Accessed on 15 October 2016, 21:40 hrs, UTC. Author:  Harry Lythall (SM0VPO). Please insert either of these two title URL links into your browser search box to read the full article. Comment: A concise, well-written antenna tutorial from Harry Lythall (SM0VPO). Harry does an excellent job of explaining the theory and design of basic dipole and vertical HF antennas. The article explores the following questions: What is wavelength? How long should antennas be? How does an antenna work? How does a 1/4 wavelength antenna work? How do I connect a 1/4 wavelength antenna to a transmitter? How do I know if an antenna is useless? A very good introduction to antennas for the newly-licensed radio amateur. For the latest Amateur Radio News and Information, please visit my two news sites: http://www.kh6jrm.info (for breaking news of the Amateur Radio community). htt

Simple Ham Radio Antennas: Antenna Basics, part II. Post #292

Source:  Field, Van (W2OQI). "HF Antennas 101." " QST ", September 2004. Comment: Russ Roberts (KH6JRM). Summary: This article is a follow-up to my last post, where I quoted James R. Duffey (KK6MC/5) from his article entitled "Antennas--Some Rules of Thumb for Beginners."  These two articles will give new licensees as well as us "old timers" a gentle reminder of some basic truths concerning antenna design and theory. Thanks to Dean Manley (KH6B) for running off a copy of this helpful article.  Like the previous essay from James R. Duffy, I will place this in my antenna reference library.   Article excerpts: Here are 10 tips and truisms that every ham should know: 1.  An antenna does not have to be resonant to work. The only reason to make an antenna resonant is to eliminate the need for a impedance-matching device such as an "antenna tuner."  Actually, a non-resonant wire dipole antenna fed with open-wire line and an ante