Skip to main content

DIY QRP Magnetic Loop Ham Radio Antenna


If you can't see the video, please insert this title URL into your browser search box:

https://www.youtube.com/watch?v=Dw1rz0CVn90&ab_channel=OH8STNHamRadio

This is post 2415 in a continuing series of simple ham radio antennas.

Thanks to Julian (OH8STN) for this excellent, informative tutorial on making a low-power magnetic loop antenna for radio amateurs.

The antenna is light weight, compact, and easy to erect and take down.  

Here are some comments from Julian:

In this video we build our own Man Portable Magnetic Loop Antenna. The video has details for two different antenna, both based on the Chameleon Magnetic Loop starter kit. Here are the details: a - 40-10M single turn, man portable loop based on the Chameleon P-LOOP. - 80, 60, 40M 2 Turn, Man Portable Magnetic Loop Antenna. Th The 80,60,4m version can be built for only those bands, or as a convertible model with a switched capacitor allowing quick conversion between 40-10M or 80-40m modes. Power handling: 10W DATA/CW or 25W SSB A page has been setup with build notes, images, WSPR Test results, Links to buy the parts for your own loop, educational resources, calculators, and everything a Starter Kit builder could need to get their own loop build off the ground.The page is still work in progress, but will be completed within a few days after the video is published. http://oh8stn.org/blog/2017/02/09/diy... multi turn loop calculator: http://people.physics.anu.edu.au/~dxt... Remember we are not trying to compare these magnetic loop antenna with full size amateur radio dipoles mounted many feet or meters in the air. Our goal is to build a practical and portable HF field antenna, which won't take lots of space, weight, which can be used with our QRP radio on the go. So the practical aspects of the loop may at times out weigh the performance benefits of other antenna designs. I really encourage you to share your your own starter kit inspired homebrew projects. If you would like me to feature your magloop on the build page, just email me a full HD image to "magloop @ my callsign dot org". - If you found this episode useful, consider dropping a buck in the tip-jar here: https://paypal.me/oh8stn/1USD 73 Julian #oh8stn - Easy to Deploy Portable Vertical Antennas: https://www.youtube.com/playlist?list... - Ham Radio with a Raspberry Pi: https://www.youtube.com/playlist?list... - Yaesu FT-891 Info & Tutorials: https://www.youtube.com/playlist?list... - DIY LiFePO4 10ah battery pack for Ham Radio: https://youtu.be/nDoQoVA0hAc - PowerFilm FM16-7200: https://www.youtube.com/playlist?list... - Ham Radio Off Grid with OH8STN https://www.youtube.com/playlist?list... - Better Power Distribution for Portable Ops https://oh8stn.org/blog/2018/11/03/be... Support the channel - Drop a buck in the tip-jar http://www.paypal.me/oh8stn/1usd - support the channel with Patreon http://www.patreon.com/oh8stn - Visit my Amazon influencer page http://www.amazon.com/shop/oh8st
-----
Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).




 

Comments

Popular posts from this blog

G5RV Multi Band HF Dipole Antenna. Post #1555.

If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=aeNHIQ_j4Dk This well-produced and richly illustrated tutorial on the classic G5RV HF Dipole Antenna was presented to the Brandon Amateur Radio Society in Brandon, Florida in 2017 by Bernie Huth (W4BGH).  Bernie does an excellent job of  explaining the pros and cons of this popular HF antenna from the late Louis Varney (G5RV).  Although Varney envisioned his design primarily as a 3/2 wavelength antenna for the 20 meter Amateur Radio band, radio amateurs have used the antenna for multiband use.  The G5RV is an excellent choice for the 20 meter band.  Performance on other HF Amateur Radio bands is good enough to qualify as stand alone HF antenna if you can only erect one HF antenna. 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 wee

Amateur Radio Bicycle Mobile Setup. Post #1554.

If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=2zWb-KnkGdY. Here's a way to use Amatuer/Ham Radio while you work on shedding a few pounds in useful exercise.  Why not equip your bicycle for 2 meter/70 cm mobile operation? In this short, well-made video, "taverned" shows us how he used a mag mount antenna, a simple C clamp, and a basic ground system to convert his mountain bike into a mobile station.  The project is straight forward, simple, and gives you emergency communications while you peddle down the road. 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). https://hamradiohawaii.wordpress.com. https://bigislandarrlnews.com. https://amateurradionewsinformation.com (Amateur Radio News & Information).

An 80-Meter Vertical Helix

Like many amateur radio operators, I live on a small lot surrounded by neighbors, utility lines, and civic-minded citizens concerned about the "attractiveness" of my community.  Whether by design or outright fear, I've adopted the "stealth" approach to ham radio antennas.  It's the old "out of sight, out of mind" idea applied to amateur radio antennas. The amateur radio press is full of articles describing the struggle of amateur radio operators to pursue their hobby under the burdensome regulations of CC & Rs, HOAs, and other civic minded citizens who object to antenna farms.  So far, my modest verticals, loops, and inverted vees have blended well with the vegetation and trees bordering my small backyard.  Vertical antennas have always been a problem because of the limited space for a radial system.  There are times, however, where a shortened vertical for the lower HF bands (such as 80/75 meters) is necessary where horizontal space is lack