Wire elements were alternately cross connected to
a straight, open wire phasing line. A 4:1 Balun at
the feedpoint to the 50 ohm coaxial cable feedline.
4M long aluminium spreaders supported the elements
The coax was run halfway back along the boom for balance
The 4 elements produced 2 SWR dips at 7.1 and 10.1 MHz
The antenna design software indicated 4dB gain and 15dB f/b.