[TowerTalk] 2ele Yagi - driven element & director or reflector?

[Peter Larsen]

CP2235 wrote:
> 
> Can anybody tell me why most commercial 2ele design are combinations
> of a
> driven element with a reflector whereas the ARRL Antenna Book states
> that the
> specifications on both F/B and gain are slightly better with a
> combination of
> driven element and director? Plus the advantage of a slightly shorter
> element
> (director instead of reflector)?
> Thanks,
 
Could it be that the DRI/DIR combo works at about .25 wave lenght
and the REF/DRI combo works at about .20 wave length giving you
a shorter boom, and less wind load?

73 es have fun.
Peter
VE6NAO

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