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Showing posts from November, 2023

The Double Bazooka Antenna.

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If you want a low noise, wide bandwidth HF antenna, please consider this "Double Bazooka" design from Rob Wagner (VK3BVW).  Unlike the "classic" dipole antenna, the double bazooka is grounded. Rod does a good job of discussing the theory, construction, testing, and use of this HF antenna. If you can't see the video, please insert this title URL into your browser search box:  https://www.youtube.com/watch?v=mZ4Bf-BjTnM. Here are a few notes from Rob (VK3BVW): Follow along using the transcript. Show transcript Amater Radio 233 subscribers   Thanks for joining us today. Aloha es 73 de Russ (KH6JRM).

Linear loading-Antenna lengths & Conclusion

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Linear loading is another way to reduce the size of amateur radio antennas without compromising performance. In this video, Tim (G5TM) discusses the pros and cons of using this method to reduce the size of both vertical and horizontal dipole antennas. Time reviews the optimum lengths needed to load shortened antennas. If you can't see the video, please insert this title URL into your browser search box:  https://www.youtube.com/watch?v=6-COCfj2D5Q Here are final thoughts from Tim (G5TM): An overview of the linear loading experiment findings and some information on antenna lengths for you. Here are the other videos in my Linear Loading journey: 1. Shortening a 40 meter quarter wave vertical:     • 40 meter portable Antenna - Short   2. Shortening a 10 metre dipole using linear loading:     • Shortening a Dipole Antenna by Linear...   3. Short 40m dipole for a small garden:     • HAM RADIO 40 Metre Dipole - Shorty Forty   4. Getting 80m into a small garden:     • Doublet Anten

How to Make the Easiest Ham Radio Antenna Ever! The Doublet.

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If you can erect only one multiband HF antenna, then this "Doublet Antenna Project" from Steve ("Temporarily Offline Ham Radio") is for you. The doublet antenna requires only a few parts and offers decent gain and multiband flexibility. If you can't see the video, please insert this title URL into your browser search box:   https://www.youtube.com/watch?v=ytbb_RSw9B4. Here are a few comments from Steve: he doublet antenna has great ears, is easy to make and works on the lowest band you cut it for and all those bands above it. It requires a tuner, but don't let that scare you. Click the 👍 Like Button, 🤡 Leave a Comment, ❤️ Subscribe 👉 Support The Channel 👈 ❤️ Patreon:    / temporarilyoffline   📺 Youtube Memberships: https://www.youtube.com/temporarilyof... 💸 Tip Jar: https://paypal.me/temporarilyoffline 👕 Merch: https://shop.spreadshirt.com/temporar... 🧰 Gear I Use: https://kit.co/TemporarilyOffline 🛒 Amazon Link: https://www.amazon.com/shop

Building an HF Vertical 1/4 wavelength monopole.

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Thanks to the "AmRad Podcast" for this exceptionally well-done tutorial on how to build a vertical 1/4 wavelength monopole antenna for the 20 meter Amateur Radio Band. The video takes us through the design, construction, testing and use of this basic HF antenna. If you can't see the video, please insert this URL into your browser search box:  https://www.youtube.com/watch?v=VjI9G0WjiFo. Here are some comments from the "AmRad Podcast.": Today I'm building an HF monopole for 20 meters. I go through a basic formula, for fun we model the antenna in MMANA-GAL, then I show you how I put it together and tune the elements. Stick around until the fireside chat at the end, and I talk a little bit about ground-mounted vs. above-ground monopoles.. and proximity to trees. This should be a lively debate in the comments section ;) Follow more stuff here: @tcurrentsource www.thecurrentsource.com Chapters View all Intro 0:00 Modeling the Antenna 0:47 Tuning the Antenna 7:28