wrote

I just realized, on that website it does not say the spacing between
elements, only the length of the elements. How would I find out that?

22/freq (in Mhz)

See: http://www.hamuniverse.com/jpole.html

Roy has pointed out that a Balun is a good idea. The above site recommends
at least 4 coils of feedline at the feedpoint as an RF choke. I used neither
and had phenomenal "luck" with a 60' feedline and later added full lightning
protection with no detectable change in the prop.

Jack Painter
Virginia Beach VA