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AO-7: The Satellite that refused to die.

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  Here's a fascinating video from AE4JC Amateur Radio describing the remarkable rebirth of AMSAT-OSCASR 7, which went silent in 1981 and came back to life on 21 June 2002. The video includes a look at an ARRL Winter Field Day event that included contacts with the reborn "bird."  The display of appropriate antennas and related equipment is excellent. Thanks for joining us today. Aloha es 73 de Russ (KH6JRM).
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The Delta Loop / Multi Band Delta Loop

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  One of my favorite HF antennas is the easily-made delta loop, which can attain multiband coverage with a balanced feed line and a sturdy "antenna tuner." According to Vince of "Ham Shack Reviews", the delta loop antenna will have either a horizontal or vertical polarization, depending on where you connect the feed line. Vince does a good job of tying theory to practice in this concise, easily understood video. If you need a new HF antenna idea, try the delta loop-you won't be disappointed. If you can't see the video, please insert this title URL into your browser search box:  https://www.youtube.com/watch?v=hFJABC0cltw. Thanks for joining us today. Aloha es 73 de Russ (KH6JRM). Here are a few comments from Vince: The delta loop antenna can be feed in different places to to change the polarization. This also shapes the antenna characteristics. As a multi band delta loop antenna it will need a 4:1 balun or ladder line. A single band delta loop antenna can b...
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Building the Inverted V Dipole.

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  One of the easiest, most forgiving HF antennas is the Inverted V Dipole.  This antenna needs only one support and is fairly easy to design, build, test, and use.  The Inverted V is suitable for both home station use and for "field operations" such as POTA/SOTA. Walt (K4OGO) does an excellent job of mixing antenna theory and practice in making his 20 meter band Inverted V.  Walt's project is based on work by Martin (K7MEM).  Martin's Inverted V Dipole calculator is mentioned in Walt's closing comments. If you can't see the video, please insert this title URL into your browser search box:  https://www.youtube.com/watch?v=1ifZt6kVzOo. Thanks for joining us today. Aloha es 73 de Russ (KH6JRM). Here are some comments from Walt (K4OGO): I built an Inverted V Dipole Antenna for 20 meters using the K7MEM Calculator. #hamradioantenna #hamradio #invertedVantenna Link to K7MEM Antenna Calculator: https://k7mem.com/Ant_Inverted-V.html Chapters View all Int...
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