N4KG responses interspersed below.
On Mon, 30 Aug 1999 zeitler@ibm.net writes:
>
> Esteemed Reflectees,
> I will be putting up a 2 element vertical yagi for 20 meters soon.
> Is the old, long term, ARRL Handbook info of .2 wavelength spacing
> IDEAL for a 2 element yagi using a reflector?
Maximum GAIN for a 2L Reflector Yagi is at 0.15 WL
Maximum Ground Reflection is with HORIZONTAL
Polarization. Why are you thinking of vertical?
> Also, is it safe to use 468/f for the driven and then add 5% to that
> for the
> reflector (this is what I have successfully done in the past)?
> I guess kind of a dumb question since I know it works.
>
Making the reflector 5% longer is a good rule of thumb.
Modeling is even better.
> I installed a 2 element vertical yagi five years ago for 17 meters
> and it
> was an absolute flame thrower. I copied the data from the Handbook
> and
> figured I would do the same unless those of you who have the latest
> antenna
> software recommend something that would be even better?
>
> 73s
>
> Lane
> ku7i
>
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