Making the circle  (Octagon)

There is an easy system to place the antennas in a perfect circle (Octagon) using just two cords that do not stretch.
You can see how everything works on YouTube.

https://www.youtube.com/watch?v=kwmRfd083Es

The video was made by ON4WW for its 8 circle Hi-Z 4-8PRO RX antenna.
Keep in mind that he uses different dimensions for his 8 circle Hi-Z 4-8PRO antenna.
For the YCCC 9 circle you have a diameter of (120feet)36.567m and a radius of (60feet) 18.288m.
So you need 1 length of 18,288m and 1 of 14m that sets the spacing of the antennas to exactly 45 °.

You can find the correct calculation on this link.

http://www.liljedahl.info/projects/octagon_calculator/

A big thank you to ON4WW for sharing this easy approach.