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This is post 2489 in a continuing series of simple ham radio antennas.
Here's some experimental antenna fun from Arild Jensen (KM6AKK).
The 20 meter full loop antenna fits snugly into a small backyard of a condominium apartment.
Multiband performance is possible if the coax feed line is replaced by a "tuner", balun, and balanced feed line.
Here are some comments from Arild:
Aloha es 73 de Russ (KH6JRM).