delta loop length circumference in feet

what is the correct cutting formula for a delta loop, apex up, fed one quarter wave from apex?

I thought the formula 1005/freq in mhz applied to delta loops too, for measurements in feet. I would need to go look again...

Check out the "right angle delta" on this page:

SCVs: A Family Album (antentop.org)

Thanks TKX!

Very helpful.

Kirk K9WW