I initially listed my four square with the following description:
I have four free standing base loaded Force 12 80M verticals that I
currently use in a four square. I want to sell the antennas and the phasing
box. I will sell the four antennas separate for 1000.00 or the four
antennas with the Comtek phasing network for 1250.00. I also have four 3/8
wave 50 ohm phasing lines that are essentially new with connectors each end
for $275.00. I will split or combine in any way but not separate the four
antennas. They are 39' 6" tall with a humongous base loading coil. Buyer
to pay shipping. I have boxes.
In the above paragraph, the phasing lines are 3/4 wave long each for use
with 3/8 wave spacing between antennas on the corners. The diagonal spacing
would be 135 feet.
It is not necessary to use 3/8 wave spacing. One could use 1/4 wave
spacing. Since the phasing lines are an odd multiple of 1/4 wave, it isn't
critical. However using 3/8 wave spacing gives one a bit lower takeoff
angle plus a slight bit more gain that the conventional 1/4 wave spacing.