John;

468/f(MHz) is for a 1/2 wave dipole.
Try 240 or 246/f(MHz) for radials.
GL,
Jim

John L wrote:
Hi all,

Going to be moving my ground mounted HF6V up to the roof this spring.

Should I keep the same radial length 1/4 wave (468 div by freq) or is
there
a different formula for elevated radial lengths?

Thanks