A Hawaii-based Amateur Radio Antenna Blog focusing on the theory, design, and use of homemade antennas.
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 be feed with a 2:1, 2.5:1, or a quarter wave matching stub.
A single wave delta loop can be fed with a 2:1 balun or a quarter wave length of 75 ohm coax cable. You will have to adjust according to the velocity factor of the 75 ohm matching stub.
These antennas are known for lower noise on receive and better DX range on transmit.
I meant 50 ohm coax, not 15 ohm.
Links to items in video:
2.5:1 Balun: https://www.balundesigns.com/model-25...
4:1 Balun: https://amzn.to/3tWzf4t
Wire: https://amzn.to/3n7uAcc
Insulators: https://amzn.to/3OcHQYR
Dacron Rope: https://amzn.to/3Oxqjuc
Antenna Analyzer: https://amzn.to/3n8dlY600:00 The Delta Loop Antenna
01:00 Multi band delta loop
02:37 Calculate wire length
03:30 75 OHM matching stub
04:22 Build with balun
05:00 Insulator type
06:00 Remember to Subscribe
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Aloha es 73 de Russ (KH6JRM).