This will calculate the length of a 1 wavelength loop

Megahertz |
loop in feet |
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This will calculate the length of a half wave dipole.

Megahertz |
half wave length wire in feet |
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This will calculate the length of a 5/8 wave vertical with 1/4 wave radials.

Megahertz |
5/8 wave vertical in feet |
1/4 wave radials in feet |
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This will calculate the length of a delta loop.

This antenna is a triangle shape with L1=top; L2 and
L3=sides.

It should be feed with a 4:1 balun.