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Showing posts with the label end fed halfwave antenna

How to wind an end fed halfwave autotransformer.

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  Although I enjoy building and using end-fed halfwave antennas (EFHW), I dread making the autotransformer necessary to match my low impedance transceiver to the high impedance of the EFHW. However, thanks to this excellent video from Colin (MM0OPX), I have an easy-to-follow tutorial that takes me step-by-step through the entire construction process.  Colin helps you every step of the way until you're done with a sturdy, well-made autotransformer suitable for both low and high power usage. If you can't see the video, please insert this title URL into your browser search box:  https://www.youtube.com/watch?v=dgk0HtOuE0I. Thanks for joining us today. Aloha es 73 de Russ (KH6JRM/AL0HA). Here are some comments from Colin (MM0OPX). Link to the spreadsheet of results https://docs.google.com/spreadsheets/... Demonstration on how to wind an End Fed Half Wave Autotransformer. Check out the Autotransformer in action -     • Build Yourself a...

Gain with one wire: Trying an end fed zig zag.

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  If you need more performance on the higher HF bands (20m-10m), please try this EFZZ (end fed zig zag) antenna from Peter Parker (VK3YE). Peter says this end fed variant works well and apparently gives a bit of gain. The antenna is easy make and uses less space than a regular end fed antenna. If you can't see the video, please insert this title URL into your browser search box:  https://www.youtube.com/watch?v=aLt7umdKojY. Thanks for joining us today.   Aloha es 73 de Russ (KH6JRM). Here are some comments from Peter (VK3YE): End-fed wires are popular for the HF bands but amateurs don't always get the most benefit from them. Especially in the 14 - 28 MHz range. Here I try an antenna that I call an End Fed Zig Zag (EFZZ) on 21 MHz WSPR across the Pacific Ocean between Australia and North America. Contents: 0:01 Introduction 1:26 What we pay too much and too little attention to 2:34 Some other types of antennas 3:18 Introducing the End Fed Zig Zag (EFZZ) 5...