20M Vertical Dipole-T2LT Design
If you have limited space for a 20 meter dipole antenna, this classic "T2LT Design, No Radials Needed" vertical antenna may be what you need.
In this video, "Tech Minds" uses an idea from Stuart (M0OVG) to build an effective antenna for the 20 meter Amateur Radio band.
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=hpW-3K20x1M
Here are some comments from "Tech Minds":