For sheer simplicity, efficiency, and low cost, you can't beat a basic Dipole Antenna.
In this video, Mike (M0MSN) takes us step-by step through the design, construction, testing, and use of this classic HF antenna. By adding additional dipole elements, you can turn this simple antenna into a multiband "Fan" Dipole covering several Amateur Radio bands.
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=42s6Y3xqcp0
Here are a few comments from Mike (M0MSN):
Hello again, After many days off I am back with another simple Antenna Build. There is much to be said about a simple dipole antenna and much that is missed, so in this upload I try to bring the simplicity and speed of building a dipole and how to make it a fan of more than a single frequency, by turning it into a FAN Dipole.