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

[Tom Osborne]

Peter Larsen wrote:
> 
> 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

Hi Peter. Actually, a DE/DIR combo will work pretty well with booms as 
short as .1 wl. I think max. gain is about .15 wl.  73
Tom W7WHY
Tom W

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