and here is how you create it:

The loaded 20m MFJ-2220 dipole on the fiberglass telescopic pole MK-6-HD, to be exact.

Here is the short review of the pair:

The usual; I live in condo community with strict HOA rules; antennas outside of my unit is out of the question. Fortunately, I have access to the attic and the roof is asphalt shingles, i.e. its RF transparent. Unfortunately, the attic is very small, about 20x25ft (6.1x7.5 meters).