VIDEO
One of the easiest and least expensive HF antennas you can make is the basic random wire end-fed antenna. The secret to this versatile antenna is the use of a 9:1 transformer and a good ground system.
In this video, Michael Martens (KB9VBR) takes us from start to finish in the construction of an end-fed antenna and its accompanied 9:1 transformer.
Random wire end-fed antennas are perfect for both home and portable use.
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=D_-aNzrIXWs
Here are some comments from Michael (KB9VBR):
Can a non resonant antenna be efficient? It sure can. I show you how to build a non resonant random wire antenna with a 9:1 transformer.
FT-140 43 mix Ferrite Toroid: https://www.mouser.com/ProductDetail/...
Toroid Core FT140-43 Ferrite: https://amzn.to/3WKPApC
18ga Enameled Magnet Wire: https://amzn.to/3WFhSBX
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Homebrew Antenna Challenge:
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Random Wire end fed antenna resources:
https://toroids.info/FT140-43.php
https://sprott.physics.wisc.edu/techn...
https://udel.edu/~mm/ham/randomWire/
https://m0ukd.com/homebrew/baluns-and...
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Timestamp
00:00 Introduction
00:33 End Fed Antennas
01:22 Random wire antennas: long wire or end fed Zepp
03:11 Wire Lengths are important
04:09 Ferrite cores and wire
06:55 Building the 9:1 transformer
09:28 Installing the antenna
11:05 Testing and making contacts
15:12 Advantages and Disadvantages of non resonant antennas
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#hamradio #amateurradio #hamradiohowto #antenna #antennaproject #nonresonantantenna #randomwireantenna #endfedantenna #efhw #endfedhalfwave #balun #unun #9to1transformer
Thanks for joining us today.
Aloha es 73 de Russ (KH6JRM).