Clearing Up Some Confusion About End-Fed Wire Antennas


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This is post 2573 in a continuing series of simple ham radio antennas.

Thanks to Gil from the "RadioPreppers.com" website for this fascinating look at end-fed antennas.

Gil does an excellent job of explaining the pros and cons of this popular Amateur Radio antenna.

Gil shows how to maximize the performance of end-fed random wires with a variety of UNUNs, including 9:1 and 49:1 transformer values.

Here are some comments from Gil:

Hoping to clear up some confusion on end-fed wires, half-wave or random and the impedance transformers used with them. You also get a free rant on contests and a quick glimpse of my new Elecraft K1. Check out the Half-Wave End-Fed antenna group on Facebook, by Steve Ellington. Formulas for half-wave wire calculations are 143/f in MHz for meters and 468/f for feet. Feedback would be appreciated especially to correct any mistakes I may have made in my analysis. Version Française en cours d'édition... EARCHI 9:1 UNUN: http://www.earchi.org/92011endfedfile... Random Wire Antenna Lengths: http://www.hamuniverse.com/randomwire... http://udel.edu/~mm/ham/randomWire/ Please help this channel: https://www.patreon.com/radioprepper DISCLAIMER: The Radio Prepper logo (depicting a microphone) is indeed inspired from a famous flag created in 1775. It is NOTHING BUT a symbol of freedom and independence. It does NOT imply support to any political group. It does NOT imply, represent nor support any ideology with an intent on harming anyone. Freedom means freedom from persecution based on any human trait or belief such as, non exhaustively, race, gender, religion, sexual orientation or nationality. The Radio Prepper channel is a technology and science channel with a focus on preparedness and use of radio technology for disaster relief and small group communications in times of need. It is apolitical and open to anyone sharing the same interests. . Subscribe to my alternate platforms: https://ugetube.com/@RadioPrepper https://odysee.com/@RadioPrepper:1 oops, wrong address! Correct one below: https://odysee.com/@RadioPrepper:d Now you can buy me a coffee :-) https://www.buymeacoffee.com/

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Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).
 

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