Posts

Homiebrew Base Loaded Mobile HF Antenna 6 thru 80 meters. Post 1962.

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If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=YQr9gg7umg0. Mobile HF antennas can be difficult to install, tune, and use because of several problems, including poor grounding, the use of fiberglass in vehicle bodies, rf "hash" from onboard electronics, and poor connections. In this video from K1GMM, we see how some of these problems can be identified and "tamed".  An important element of K1GMM's mobile HF antenna is the hefty air coil which is tapped to obtain a decent match to his transceiver. K1GMM offers several suggestions that can help make you next mobile HF antenna a bit easier to install and tune. For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.HawaiiARRL.info. http://www.arrl.org. http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday by HQ ARRL). https://oahuarrlnews.wordpress.com. htt

Goofy Antennas That Work. Post 1961.

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If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=HzWfeQVdtzY. In this video from Stan Gibilisco (W1GV), we learn a few new things about coax-fed dipole antennas and open-wire-fed zepp antennas.  Both of these "classic" HF antennas perform well if we pay attention to the peculiarities of each antenna. While coax-fed HF dipole antennas are simple and easy to build, the zepp or "Zeppelin Antenna" is a tricky "beast" that can prove frustrating to design, tune, and use. Stan offers some useful suggestions on designing and building these antennas, so that your efforts will succeed without problems.  An interesting look at two different HF antennas that can serve you well in the years ahead. For more antenna articles from Stan, please visit:  http://www.sciencewriter.net. For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.HawaiiARR

HOW TO seal coax connectors and protect LNAs from water, salt spray, UV ...

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If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=57IQDnyk2LA.  This is post 1960. Protecting your antenna connectors and exposed wiring is an often missed step in antenna construction.  Your antenna will last longer if you take steps to "weatherize" all exposed wire areas. In this video from ShineMicro, we learn how to seal coax connectors and protect LNAs from water, salt spray, UV rays, and humidity.  The steps outlined in this video are simple, easy to follow, and fairly inexpensive.  If you've invested time and money in designing and building your latest antenna creation, you need to insure that it's protected against harsh weather conditions.  A little protection now will save you a rebuilding project later. For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.HawaiiARRL.info. http://www.arrl.org. http://www.arrl.org/arrl-audio-news (a

Fishing Pole 40 Meter Vertical Antenna. Post 1959.

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If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=PXg7ZOAkDyg. Here's another simple, effective, and inexpensive antenna suitable for both home and field use. In this video, VE3BF uses common materials to make a quick and easy 40 meter vertical antenna, which can be used on other amateur radio bands with an "antenna tuner." Here are the materials needed for this project: Shakespeare telescoping 20 carbon fibre fishing pole from Amazon. 33' 9"/10.28 meters of 18 gauge speaker wire. LDG 4:1 balun. 20'/6.097 meters of 50 ohm coaxial cable for the feedline. Extra wire for a simple ground radial or counterpoise system. For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.HawaiiARRL.info. http://www.arrl.org. http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon by HQ ARRL). https://oahuarr

Five minute portable 40m ground plane antenna. Post 1958.

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If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=lsGXJxNkfb8. A nicely done, simple portable vertical antenna for the 40 meter Amateur Radio band from John Saunders.  John does an excellent job of describing this antenna made from commonly available parts. The antenna is compact, easily made, and performs well under field conditions. For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.HawaiiARRL.info. http://www.arrl.org. http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon by HQ ARRL). https://oahuarrlnews.wordpress.com. https://hamradiohawaii.wordpress.com. https://bigislandarrlnews.com. https://www.eham.net. http://www.southgatearc.org. Thanks for joining us today. Aloha es 73 de Russ (KH6JRM).

The 6 meter Delta Loop Tutorial. Post 1957.

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If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=lZkWPP13S6k. Thanks to M0ZMP for this excellent, well-presented video on how to design and build a 6 meter Delta Loop Antenna.  This antenna is strong, portable, and inexpensive if you use locally available materials. M0ZMP takes you through the entire assembly process with suggestions designed to make this antenna work for you.  This antenna is suitable for both home and portable use. For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.HawaiiARRL.info. http://www.arrl.org. http://www.arrl.org/arrl-audio-news ( A weekly podcast which is updated each Friday afternoon by HQ ARRL). https://oahuarrlnews.wordpress.com. https://bigislandarrlnews.com. https://hamradiohawaii.wordpress.com. https://www.eham.net. http://www.southgatearc.org. Thanks for joining us today. Aloha es 73 de Russ (KH6JRM).

KK4OBI-Bent Dipoles. Post 1956.

Bent Dipole Antennas from KK4OBI Source:   https://www.qsl.net/kk4obi/Center-fed%20Dipole%20selection.html Accessed on 12 August 2019. Content provided by Dick Reid (KK4OBI). One of the simplest and cost effective HF antennas you can build is the "classic" dipole antenna.  The dipole can be fed with 50 ohm coaxial cable for single band use or with balanced feed line into a balanced "tuner" for multiband HF applications. The dipole antenna is amazingly "forgiving" and can be shaped to fit your property or the confines of a portable operation. You can still use a dipole antenna fairly well, even if you have to "bend" it out of shape to fit  your needs. In this post from Dick Reed (KK4OBI), we explore at least 16 types of "bent" dipole antennas that will work in your yard:  These variation range from the traditional horizontal HF dipole and inverted V to bent end dipoles and vertical dipole configurations. Dick provides an in