[TowerTalk] 2-el yagi gain vs boom length

[realex]

Hi Pete,
18 feet is closer to .14 wavelength.  Dr. Lawson says with that boom length
gain is around 7 dBi with around 11 dB f/b
73, Bob, W5AH

-----Original Message-----

Can someone who has W2PV's book tell me what he says is the nominal
free-space gain of a 2-element 40m DE/reflector yagi on an 18 foot (roughly
.27 wavelength) boom?  I'm doing some modeling of a shortened yagi with
that boomlength and want a point of reference.

Thanks!

73, Pete N4ZR