Moxon 3 element:
has a very good F/B and bandwidth.
4,0 * 4,0 meter, weight about 2,5 kg, gain 7,5 dBi.
Plot on 20m
antenna with connections for the rods and a coax connector (female PL259).
The rod connection we have in different sizes. See next picture.
8-11mm and 11-15mm