"Richard" wrote

I'm looking to make the center frequency 159 Mhz. So any practical design
I
suppose is likely to be a VHF yagi not too far removed from 159 Mhz.
My antenna is to be a receiving antenna.

Richard, I thought you wanted a marine-band antenna? The center should be at
156.300 to 156.800 mHz and will cover above that fine, but not well below
it.

Jack