Posts

Showing posts with the label end fed halfwave antenna

Use this antenna-no tuner-all bands

Image
  According to Kevin (K7SW), the Chameleon LEFS 8010 End-Fed Antenna deploys "in 20 minutes...and became a 'go to' for ME.'" Kevin shows how to erect, test, and tune the Chameleon LEFS 8010 End-Fed Antenna for field or portable situations such as POTA and SOTA events.  Also, the antenna is suitable for your home station if you have sufficient space. If you can't see the video, please insert this title URL into your browser searchbox: https://www.youtube.com/watch?v=hNyHhjMH85g. Thanks for joining us today. Russ Roberts (KH6JRM/AL0HA). Here are some comments from Kevin (K7SW): n this Video I deploy the Chameleon Antenna Systems LEFS 8010 Endfed antenna I verify the SWR readings for the bands I like to operate on. and set this antenna up in a couple locations to see how well this antenna works for me. Chameleon Antenna provided the LEFS8010 antenna and feed line choke for review. 🔹CHA LEFS 8010 End fed antenna https://geni.us/LEFS8010 🔹CHA RFI CHOKE http...

How to wind an end fed halfwave autotransformer.

Image
  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.

Image
  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...