If you want a simple, inexpensive, and efficient antenna, please consider this tri-band HF (40/20/10 meters) design from Stephen Flanigan (K4SRF).
You may already have most of the antenna materials in your "junk box."
Although Stephen says he made this "Fan Dipole" to cover only 40, 20, and 10 meters, you could use the 40-meter element as a 3/2 wavelength antenna on the 15 meter band.
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=X5rfs2y5PCw.
Thanks for joining us today.
Aloha es 73 de Russ (KH6JRM).
Here are some comments from Stephen (K4SRF):
In this video, I will be designing and building a 3-Element, 40/20/10 fan dipole.
Chapters
